122101221112020 has 72 divisors (see below), whose sum is σ = 375590235121920. Its totient is φ = 32101729490880.

The previous prime is 122101221111973. The next prime is 122101221112027. The reversal of 122101221112020 is 20211122101221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 122101221111984 and 122101221112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101221112027) 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, 4777030300 + ... + 4777055859.

It is an arithmetic number, because the mean of its divisors is an integer number (5216531043360).

Almost surely, 2^{122101221112020} is an apocalyptic number.

122101221112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122101221112020 is an abundant number, since it is smaller than the sum of its proper divisors (253489014009900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122101221112020 is a wasteful number, since it uses less digits than its factorization.

122101221112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554086245 (or 9554086240 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 122101221112020 its reverse (20211122101221), we get a palindrome (142312343213241).

The spelling of 122101221112020 in words is "one hundred twenty-two trillion, one hundred one billion, two hundred twenty-one million, one hundred twelve thousand, twenty".