121111111022000 has 80 divisors (see below), whose sum is σ = 319469090732064. Its totient is φ = 44040404000000.

The previous prime is 121111111021997. The next prime is 121111111022017. The reversal of 121111111022000 is 220111111121.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2752503251 + ... + 2752547250.

Almost surely, 2^{121111111022000} is an apocalyptic number.

121111111022000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111111022000 is an abundant number, since it is smaller than the sum of its proper divisors (198357979710064).

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

121111111022000 is a wasteful number, since it uses less digits than its factorization.

121111111022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505050535 (or 5505050519 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121111111022000 its reverse (220111111121), we get a palindrome (121331222133121).

The spelling of 121111111022000 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred eleven million, twenty-two thousand".