22012121220201 has 24 divisors (see below), whose sum is σ = 36555059608704. Its totient is φ = 12503035486080.

The previous prime is 22012121220157. The next prime is 22012121220203. The reversal of 22012121220201 is 10202212121022.

It is a happy number.

22012121220201 is a `hidden beast` number, since 2 + 201 + 21 + 21 + 220 + 201 = 666.

It is not a de Polignac number, because 22012121220201 - 2¹⁷ = 22012121089129 is a prime.

It is a super-2 number, since 2×22012121220201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22012121220203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1046093520 + ... + 1046114561.

It is an arithmetic number, because the mean of its divisors is an integer number (1523127483696).

Almost surely, 2^{22012121220201} is an apocalyptic number.

22012121220201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22012121220201 is a deficient number, since it is larger than the sum of its proper divisors (14542938388503).

22012121220201 is a wasteful number, since it uses less digits than its factorization.

22012121220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092208261 (or 2092208258 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22012121220201 its reverse (10202212121022), we get a palindrome (32214333341223).

The spelling of 22012121220201 in words is "twenty-two trillion, twelve billion, one hundred twenty-one million, two hundred twenty thousand, two hundred one".