21113161031027 has 16 divisors (see below), whose sum is σ = 24170917535520. Its totient is φ = 18280525824000.

The previous prime is 21113161030999. The next prime is 21113161031041. The reversal of 21113161031027 is 72013016131112.

It is a cyclic number.

It is not a de Polignac number, because 21113161031027 - 2¹⁸ = 21113160768883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21113161034027) 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, 423135374 + ... + 423185267.

It is an arithmetic number, because the mean of its divisors is an integer number (1510682345970).

Almost surely, 2^{21113161031027} is an apocalyptic number.

21113161031027 is a deficient number, since it is larger than the sum of its proper divisors (3057756504493).

21113161031027 is a wasteful number, since it uses less digits than its factorization.

21113161031027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846320774.

The product of its (nonzero) digits is 1512, while the sum is 29.

Adding to 21113161031027 its reverse (72013016131112), we get a palindrome (93126177162139).

The spelling of 21113161031027 in words is "twenty-one trillion, one hundred thirteen billion, one hundred sixty-one million, thirty-one thousand, twenty-seven".