22000021200121 has 16 divisors (see below), whose sum is σ = 22330671451200. Its totient is φ = 21670942668480.

The previous prime is 22000021200119. The next prime is 22000021200139. The reversal of 22000021200121 is 12100212000022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22000021200121 - 2¹ = 22000021200119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000021200191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505249611 + ... + 505293151.

It is an arithmetic number, because the mean of its divisors is an integer number (1395666965700).

Almost surely, 2^{22000021200121} is an apocalyptic number.

It is an amenable number.

22000021200121 is a deficient number, since it is larger than the sum of its proper divisors (330650251079).

22000021200121 is a wasteful number, since it uses less digits than its factorization.

22000021200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61416.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22000021200121 its reverse (12100212000022), we get a palindrome (34100233200143).

The spelling of 22000021200121 in words is "twenty-two trillion, twenty-one million, two hundred thousand, one hundred twenty-one".