10001001122021 has 32 divisors (see below), whose sum is σ = 12541251206400. Its totient is φ = 7764446232576.

The previous prime is 10001001121967. The next prime is 10001001122131. The reversal of 10001001122021 is 12022110010001.

It is a cyclic number.

It is not a de Polignac number, because 10001001122021 - 2¹⁸ = 10001000859877 is a prime.

It is a super-2 number, since 2×10001001122021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10001001121993 and 10001001122011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001001122621) 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, 1624346 + ... + 4758203.

It is an arithmetic number, because the mean of its divisors is an integer number (391914100200).

Almost surely, 2^{10001001122021} is an apocalyptic number.

It is an amenable number.

10001001122021 is a deficient number, since it is larger than the sum of its proper divisors (2540250084379).

10001001122021 is a wasteful number, since it uses less digits than its factorization.

10001001122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382893.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10001001122021 its reverse (12022110010001), we get a palindrome (22023111132022).

The spelling of 10001001122021 in words is "ten trillion, one billion, one million, one hundred twenty-two thousand, twenty-one".