10112211010021 has 4 divisors (see below), whose sum is σ = 10113816384000. Its totient is φ = 10110605636044.

The previous prime is 10112211010019. The next prime is 10112211010051. The reversal of 10112211010021 is 12001011221101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10112211010021 - 2¹ = 10112211010019 is a prime.

It is a super-2 number, since 2×10112211010021² (a number of 27 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 = 10112211009983 and 10112211010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112211010051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802677541 + ... + 802690138.

It is an arithmetic number, because the mean of its divisors is an integer number (2528454096000).

Almost surely, 2^{10112211010021} is an apocalyptic number.

It is an amenable number.

10112211010021 is a deficient number, since it is larger than the sum of its proper divisors (1605373979).

10112211010021 is an equidigital number, since it uses as much as digits as its factorization.

10112211010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605373978.

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

Adding to 10112211010021 its reverse (12001011221101), we get a palindrome (22113222231122).

The spelling of 10112211010021 in words is "ten trillion, one hundred twelve billion, two hundred eleven million, ten thousand, twenty-one".