1021212312102 has 16 divisors (see below), whose sum is σ = 2269360693680. Its totient is φ = 340404104016.

The previous prime is 1021212312097. The next prime is 1021212312103. The reversal of 1021212312102 is 2012132121201.

1021212312102 is a `hidden beast` number, since 10 + 212 + 1 + 231 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021212312103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9455669503 + ... + 9455669610.

It is an arithmetic number, because the mean of its divisors is an integer number (141835043355).

Almost surely, 2^{1021212312102} is an apocalyptic number.

1021212312102 is an abundant number, since it is smaller than the sum of its proper divisors (1248148381578).

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

1021212312102 is a wasteful number, since it uses less digits than its factorization.

1021212312102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18911339124 (or 18911339118 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1021212312102 its reverse (2012132121201), we get a palindrome (3033344433303).

The spelling of 1021212312102 in words is "one trillion, twenty-one billion, two hundred twelve million, three hundred twelve thousand, one hundred two".