122121211020 has 48 divisors (see below), whose sum is σ = 342042973440. Its totient is φ = 32555791296.

The previous prime is 122121211019. The next prime is 122121211031. The reversal of 122121211020 is 20112121221.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 107482 + ... + 505761.

It is an arithmetic number, because the mean of its divisors is an integer number (7125895280).

Almost surely, 2^122121211020 is an apocalyptic number.

122121211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121211020 is an abundant number, since it is smaller than the sum of its proper divisors (219921762420).

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

122121211020 is a wasteful number, since it uses less digits than its factorization.

122121211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616574 (or 616572 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122121211020 its reverse (20112121221), we get a palindrome (142233332241).

The spelling of 122121211020 in words is "one hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, twenty".