21020202300111 has 16 divisors (see below), whose sum is σ = 32133119241984. Its totient is φ = 11973168627264.

The previous prime is 21020202300103. The next prime is 21020202300137. The reversal of 21020202300111 is 11100320202012.

It is not a de Polignac number, because 21020202300111 - 2³ = 21020202300103 is a prime.

It is a super-2 number, since 2×21020202300111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020202302111) 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, 1598974281 + ... + 1598987426.

It is an arithmetic number, because the mean of its divisors is an integer number (2008319952624).

Almost surely, 2^{21020202300111} is an apocalyptic number.

21020202300111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21020202300111 is a deficient number, since it is larger than the sum of its proper divisors (11112916941873).

21020202300111 is a wasteful number, since it uses less digits than its factorization.

21020202300111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197962030.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21020202300111 its reverse (11100320202012), we get a palindrome (32120522502123).

The spelling of 21020202300111 in words is "twenty-one trillion, twenty billion, two hundred two million, three hundred thousand, one hundred eleven".