20122101122021 has 8 divisors (see below), whose sum is σ = 21485276831040. Its totient is φ = 18799617225312.

The previous prime is 20122101121979. The next prime is 20122101122033. The reversal of 20122101122021 is 12022110122102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20122101122021 - 2⁴² = 15724054610917 is a prime.

It is a super-2 number, since 2×20122101122021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122101122051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10172952056 + ... + 10172954033.

It is an arithmetic number, because the mean of its divisors is an integer number (2685659603880).

Almost surely, 2^{20122101122021} is an apocalyptic number.

It is an amenable number.

20122101122021 is a deficient number, since it is larger than the sum of its proper divisors (1363175709019).

20122101122021 is a wasteful number, since it uses less digits than its factorization.

20122101122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20345906155.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20122101122021 its reverse (12022110122102), we get a palindrome (32144211244123).

The spelling of 20122101122021 in words is "twenty trillion, one hundred twenty-two billion, one hundred one million, one hundred twenty-two thousand, twenty-one".