21020011102101 has 16 divisors (see below), whose sum is σ = 30574776168000. Its totient is φ = 12739311265920.

The previous prime is 21020011102037. The next prime is 21020011102121. The reversal of 21020011102101 is 10120111002012.

It is not a de Polignac number, because 21020011102101 - 2⁶ = 21020011102037 is a prime.

It is a super-2 number, since 2×21020011102101² (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 (21020011102121) 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, 2701275 + ... + 7024023.

It is an arithmetic number, because the mean of its divisors is an integer number (1910923510500).

Almost surely, 2^{21020011102101} is an apocalyptic number.

It is an amenable number.

21020011102101 is a deficient number, since it is larger than the sum of its proper divisors (9554765065899).

21020011102101 is a wasteful number, since it uses less digits than its factorization.

21020011102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470116.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21020011102101 its reverse (10120111002012), we get a palindrome (31140122104113).

It can be divided in two parts, 21020011 and 102101, that added together give a palindrome (21122112).

The spelling of 21020011102101 in words is "twenty-one trillion, twenty billion, eleven million, one hundred two thousand, one hundred one".