1212002022 has 64 divisors (see below), whose sum is σ = 3058642944. Its totient is φ = 311003040.

The previous prime is 1212002003. The next prime is 1212002023. The reversal of 1212002022 is 2202002121.

It is a junction number, because it is equal to n+sod(n) for n = 1212001989 and 1212002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212002023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22543 + ... + 54149.

It is an arithmetic number, because the mean of its divisors is an integer number (47791296).

Almost surely, 2^1212002022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212002022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529321472).

1212002022 is an abundant number, since it is smaller than the sum of its proper divisors (1846640922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212002022 is a wasteful number, since it uses less digits than its factorization.

1212002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31713.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1212002022 is about 34813.8194112625. The cubic root of 1212002022 is about 1066.1896151712.

Adding to 1212002022 its reverse (2202002121), we get a palindrome (3414004143).

Subtracting 1212002022 from its reverse (2202002121), we obtain a palindrome (990000099).

The spelling of 1212002022 in words is "one billion, two hundred twelve million, two thousand, twenty-two".