22001120022021 has 24 divisors (see below), whose sum is σ = 34160450118624. Its totient is φ = 12558708177120.

The previous prime is 22001120021999. The next prime is 22001120022023. The reversal of 22001120022021 is 12022002110022.

It is not a de Polignac number, because 22001120022021 - 2¹⁹ = 22001119497733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001120022023) 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, 79387435 + ... + 79664088.

It is an arithmetic number, because the mean of its divisors is an integer number (1423352088276).

Almost surely, 2^{22001120022021} is an apocalyptic number.

22001120022021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22001120022021 is a deficient number, since it is larger than the sum of its proper divisors (12159330096603).

22001120022021 is a wasteful number, since it uses less digits than its factorization.

22001120022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159052481 (or 159052474 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22001120022021 its reverse (12022002110022), we get a palindrome (34023122132043).

The spelling of 22001120022021 in words is "twenty-two trillion, one billion, one hundred twenty million, twenty-two thousand, twenty-one".