10001122012021 has 32 divisors (see below), whose sum is σ = 12186269319168. Its totient is φ = 8021458589760.

The previous prime is 10001122012019. The next prime is 10001122012061. The reversal of 10001122012021 is 12021022110001.

It is not a de Polignac number, because 10001122012021 - 2¹ = 10001122012019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10001122011992 and 10001122012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001122012061) 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, 15907711 + ... + 16524451.

It is an arithmetic number, because the mean of its divisors is an integer number (380820916224).

Almost surely, 2^{10001122012021} is an apocalyptic number.

It is an amenable number.

10001122012021 is a deficient number, since it is larger than the sum of its proper divisors (2185147307147).

10001122012021 is a wasteful number, since it uses less digits than its factorization.

10001122012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618961.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10001122012021 its reverse (12021022110001), we get a palindrome (22022144122022).

The spelling of 10001122012021 in words is "ten trillion, one billion, one hundred twenty-two million, twelve thousand, twenty-one".