21111302113031 has 16 divisors (see below), whose sum is σ = 22752409680000. Its totient is φ = 19472648468448.

The previous prime is 21111302113001. The next prime is 21111302113067. The reversal of 21111302113031 is 13031120311112.

It is a cyclic number.

It is not a de Polignac number, because 21111302113031 - 2²² = 21111297918727 is a prime.

It is a super-2 number, since 2×21111302113031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21111302112994 and 21111302113012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111302113001) 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, 258337280 + ... + 258418986.

It is an arithmetic number, because the mean of its divisors is an integer number (1422025605000).

Almost surely, 2^{21111302113031} is an apocalyptic number.

21111302113031 is a deficient number, since it is larger than the sum of its proper divisors (1641107566969).

21111302113031 is a wasteful number, since it uses less digits than its factorization.

21111302113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96478.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 21111302113031 its reverse (13031120311112), we get a palindrome (34142422424143).

The spelling of 21111302113031 in words is "twenty-one trillion, one hundred eleven billion, three hundred two million, one hundred thirteen thousand, thirty-one".