122111100021021 has 8 divisors (see below), whose sum is σ = 162834580743744. Its totient is φ = 81397509656160.

The previous prime is 122111100021017. The next prime is 122111100021059. The reversal of 122111100021021 is 120120001111221.

It is a happy number.

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

It is not a de Polignac number, because 122111100021021 - 2² = 122111100021017 is a prime.

It is a super-2 number, since 2×122111100021021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111100021721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2472560656 + ... + 2472610041.

It is an arithmetic number, because the mean of its divisors is an integer number (20354322592968).

Almost surely, 2^{122111100021021} is an apocalyptic number.

It is an amenable number.

122111100021021 is a deficient number, since it is larger than the sum of its proper divisors (40723480722723).

122111100021021 is an equidigital number, since it uses as much as digits as its factorization.

122111100021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945178931.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122111100021021 its reverse (120120001111221), we get a palindrome (242231101132242).

The spelling of 122111100021021 in words is "one hundred twenty-two trillion, one hundred eleven billion, one hundred million, twenty-one thousand, twenty-one".