20210102021111 has 16 divisors (see below), whose sum is σ = 20717713735488. Its totient is φ = 19709065824000.

The previous prime is 20210102021023. The next prime is 20210102021113. The reversal of 20210102021111 is 11112020101202.

It is a cyclic number.

It is not a de Polignac number, because 20210102021111 - 2¹⁸ = 20210101758967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210102021113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6043505 + ... + 8771781.

It is an arithmetic number, because the mean of its divisors is an integer number (1294857108468).

Almost surely, 2^{20210102021111} is an apocalyptic number.

20210102021111 is a deficient number, since it is larger than the sum of its proper divisors (507611714377).

20210102021111 is a wasteful number, since it uses less digits than its factorization.

20210102021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729482.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20210102021111 its reverse (11112020101202), we get a palindrome (31322122122313).

The spelling of 20210102021111 in words is "twenty trillion, two hundred ten billion, one hundred two million, twenty-one thousand, one hundred eleven".