122021101020 has 96 divisors (see below), whose sum is σ = 420503505408. Its totient is φ = 25745110272.

The previous prime is 122021100997. The next prime is 122021101039. The reversal of 122021101020 is 20101120221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 122021100987 and 122021101005.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 11168634 + ... + 11179553.

It is an arithmetic number, because the mean of its divisors is an integer number (4380244848).

Almost surely, 2^122021101020 is an apocalyptic number.

122021101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122021101020 is an abundant number, since it is smaller than the sum of its proper divisors (298482404388).

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

122021101020 is a wasteful number, since it uses less digits than its factorization.

122021101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22348219 (or 22348217 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 122021101020 its reverse (20101120221), we get a palindrome (142122221241).

The spelling of 122021101020 in words is "one hundred twenty-two billion, twenty-one million, one hundred one thousand, twenty".