1022121212 has 96 divisors (see below), whose sum is σ = 2171473920. Its totient is φ = 411840000.

The previous prime is 1022121203. The next prime is 1022121239. The reversal of 1022121212 is 2121212201.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7802387 + ... + 7802517.

It is an arithmetic number, because the mean of its divisors is an integer number (22619520).

Almost surely, 2^1022121212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022121212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1085736960).

1022121212 is an abundant number, since it is smaller than the sum of its proper divisors (1149352708).

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

1022121212 is a wasteful number, since it uses less digits than its factorization.

1022121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1022121212 is about 31970.6304598455. The cubic root of 1022121212 is about 1007.3200238420.

Adding to 1022121212 its reverse (2121212201), we get a palindrome (3143333413).

The spelling of 1022121212 in words is "one billion, twenty-two million, one hundred twenty-one thousand, two hundred twelve".