122121221021020 has 48 divisors (see below), whose sum is σ = 276517418184000. Its totient is φ = 45036123826176.

The previous prime is 122121221020979. The next prime is 122121221021119. The reversal of 122121221021020 is 20120122121221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285142645 + ... + 285570604.

It is an arithmetic number, because the mean of its divisors is an integer number (5760779545500).

Almost surely, 2^{122121221021020} is an apocalyptic number.

122121221021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121221021020 is an abundant number, since it is smaller than the sum of its proper divisors (154396197162980).

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

122121221021020 is a wasteful number, since it uses less digits than its factorization.

122121221021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570714094 (or 570714092 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122121221021020 its reverse (20120122121221), we get a palindrome (142241343142241).

The spelling of 122121221021020 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, twenty-one thousand, twenty".