22121010221001 has 64 divisors (see below), whose sum is σ = 33651978633216. Its totient is φ = 12843028915200.

The previous prime is 22121010220987. The next prime is 22121010221029. The reversal of 22121010221001 is 10012201012122.

It is not a de Polignac number, because 22121010221001 - 2²⁷ = 22120876003273 is a prime.

It is a super-2 number, since 2×22121010221001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22121010221801) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92861236 + ... + 93099146.

It is an arithmetic number, because the mean of its divisors is an integer number (525812166144).

Almost surely, 2^{22121010221001} is an apocalyptic number.

It is an amenable number.

22121010221001 is a deficient number, since it is larger than the sum of its proper divisors (11530968412215).

22121010221001 is a wasteful number, since it uses less digits than its factorization.

22121010221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240542.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22121010221001 its reverse (10012201012122), we get a palindrome (32133211233123).

The spelling of 22121010221001 in words is "twenty-two trillion, one hundred twenty-one billion, ten million, two hundred twenty-one thousand, one".