2021218200131 has 16 divisors (see below), whose sum is σ = 2379083874048. Its totient is φ = 1699345612800.

The previous prime is 2021218200107. The next prime is 2021218200137. The reversal of 2021218200131 is 1310028121202.

It is a cyclic number.

It is not a de Polignac number, because 2021218200131 - 2²² = 2021214005827 is a prime.

It is a super-2 number, since 2×2021218200131² (a number of 25 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 = 2021218200097 and 2021218200106.

It is not an unprimeable number, because it can be changed into a prime (2021218200137) by changing a digit.

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, 147505790 + ... + 147519491.

It is an arithmetic number, because the mean of its divisors is an integer number (148692742128).

Almost surely, 2^{2021218200131} is an apocalyptic number.

2021218200131 is a deficient number, since it is larger than the sum of its proper divisors (357865673917).

2021218200131 is a wasteful number, since it uses less digits than its factorization.

2021218200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295025342.

The product of its (nonzero) digits is 384, while the sum is 23.

The spelling of 2021218200131 in words is "two trillion, twenty-one billion, two hundred eighteen million, two hundred thousand, one hundred thirty-one".