200121111223031 has 32 divisors (see below), whose sum is σ = 216788491782720. Its totient is φ = 184045909377024.

The previous prime is 200121111223021. The next prime is 200121111223069. The reversal of 200121111223031 is 130322111121002.

It is a cyclic number.

It is not a de Polignac number, because 200121111223031 - 2³⁰ = 200120037481207 is a prime.

It is a super-2 number, since 2×200121111223031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121111222994 and 200121111223012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121111223021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1411190576 + ... + 1411332378.

It is an arithmetic number, because the mean of its divisors is an integer number (6774640368210).

Almost surely, 2^{200121111223031} is an apocalyptic number.

200121111223031 is a deficient number, since it is larger than the sum of its proper divisors (16667380559689).

200121111223031 is a wasteful number, since it uses less digits than its factorization.

200121111223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152435.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 200121111223031 its reverse (130322111121002), we get a palindrome (330443222344033).

The spelling of 200121111223031 in words is "two hundred trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty-three thousand, thirty-one".