121022221221012 has 96 divisors (see below), whose sum is σ = 284901558681600. Its totient is φ = 39981929242752.

The previous prime is 121022221220993. The next prime is 121022221221037. The reversal of 121022221221012 is 210122122220121.

It is a self number, because there is not a number n which added to its sum of digits gives 121022221221012.

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, 12687092539 + ... + 12687102077.

It is an arithmetic number, because the mean of its divisors is an integer number (2967724569600).

Almost surely, 2^{121022221221012} is an apocalyptic number.

121022221221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121022221221012 is an abundant number, since it is smaller than the sum of its proper divisors (163879337460588).

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

121022221221012 is a wasteful number, since it uses less digits than its factorization.

121022221221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17365 (or 17363 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121022221221012 its reverse (210122122220121), we get a palindrome (331144343441133).

The spelling of 121022221221012 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, twelve".