210121121122000 has 80 divisors (see below), whose sum is σ = 554261313737664. Its totient is φ = 76407680400000.

The previous prime is 210121121121971. The next prime is 210121121122013. The reversal of 210121121122000 is 221121121012.

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4775458026 + ... + 4775502025.

Almost surely, 2^{210121121122000} is an apocalyptic number.

210121121122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210121121122000 is an abundant number, since it is smaller than the sum of its proper divisors (344140192615664).

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

210121121122000 is a wasteful number, since it uses less digits than its factorization.

210121121122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9550960085 (or 9550960069 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210121121122000 its reverse (221121121012), we get a palindrome (210342242243012).

The spelling of 210121121122000 in words is "two hundred ten trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-two thousand".