212120100122000 has 80 divisors (see below), whose sum is σ = 586178745290112. Its totient is φ = 72726891465600.

The previous prime is 212120100121973. The next prime is 212120100122023. The reversal of 212120100122000 is 221001021212.

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 (14).

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, 7575703862 + ... + 7575731861.

Almost surely, 2^{212120100122000} is an apocalyptic number.

212120100122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120100122000 is an abundant number, since it is smaller than the sum of its proper divisors (374058645168112).

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

212120100122000 is a wasteful number, since it uses less digits than its factorization.

212120100122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15151435753 (or 15151435737 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212120100122000 its reverse (221001021212), we get a palindrome (212341101143212).

The spelling of 212120100122000 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred million, one hundred twenty-two thousand".