210112110001021 has 32 divisors (see below), whose sum is σ = 236673673498080. Its totient is φ = 185551788441600.

The previous prime is 210112110001007. The next prime is 210112110001033. The reversal of 210112110001021 is 120100011211012.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 159110040996 + 209952999960025 = 398886^2 + 14489755^2 .

It is not a de Polignac number, because 210112110001021 - 2²¹ = 210112107903869 is a prime.

It is a super-2 number, since 2×210112110001021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210112110000992 and 210112110001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112110001091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15028800 + ... + 25418281.

It is an arithmetic number, because the mean of its divisors is an integer number (7396052296815).

Almost surely, 2^{210112110001021} is an apocalyptic number.

It is an amenable number.

210112110001021 is a deficient number, since it is larger than the sum of its proper divisors (26561563497059).

210112110001021 is a wasteful number, since it uses less digits than its factorization.

210112110001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40447425.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210112110001021 its reverse (120100011211012), we get a palindrome (330212121212033).

The spelling of 210112110001021 in words is "two hundred ten trillion, one hundred twelve billion, one hundred ten million, one thousand, twenty-one".