202021012022111 has 6 divisors (see below), whose sum is σ = 213213311857512. Its totient is φ = 191388327178500.

The previous prime is 202021012022107. The next prime is 202021012022131. The reversal of 202021012022111 is 111220210120202.

It is not a de Polignac number, because 202021012022111 - 2² = 202021012022107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202021012022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202021012022131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279807495515 + ... + 279807496236.

It is an arithmetic number, because the mean of its divisors is an integer number (35535551976252).

Almost surely, 2^{202021012022111} is an apocalyptic number.

202021012022111 is a deficient number, since it is larger than the sum of its proper divisors (11192299835401).

202021012022111 is an equidigital number, since it uses as much as digits as its factorization.

202021012022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559614991789 (or 559614991770 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202021012022111 its reverse (111220210120202), we get a palindrome (313241222142313).

The spelling of 202021012022111 in words is "two hundred two trillion, twenty-one billion, twelve million, twenty-two thousand, one hundred eleven".