1213055502 has 64 divisors (see below), whose sum is σ = 2627976960. Its totient is φ = 371897856.

The previous prime is 1213055483. The next prime is 1213055509. The reversal of 1213055502 is 2055503121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213055509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 949288 + ... + 950564.

It is an arithmetic number, because the mean of its divisors is an integer number (41062140).

Almost surely, 2^1213055502 is an apocalyptic number.

1213055502 is an abundant number, since it is smaller than the sum of its proper divisors (1414921458).

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

1213055502 is a wasteful number, since it uses less digits than its factorization.

1213055502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1213055502 is about 34828.9463234247. The cubic root of 1213055502 is about 1066.4984386822.

Adding to 1213055502 its reverse (2055503121), we get a palindrome (3268558623).

The spelling of 1213055502 in words is "one billion, two hundred thirteen million, fifty-five thousand, five hundred two".