122077215220 has 24 divisors (see below), whose sum is σ = 271442279304. Its totient is φ = 45958480896.

The previous prime is 122077215109. The next prime is 122077215269. The reversal of 122077215220 is 22512770221.

It can be written as a sum of positive squares in 4 ways, for example, as 28562352016 + 93514863204 = 169004^2 + 305802^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179524977 + ... + 179525656.

It is an arithmetic number, because the mean of its divisors is an integer number (11310094971).

Almost surely, 2^122077215220 is an apocalyptic number.

122077215220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122077215220 is an abundant number, since it is smaller than the sum of its proper divisors (149365064084).

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

122077215220 is a wasteful number, since it uses less digits than its factorization.

122077215220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359050659 (or 359050657 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

Adding to 122077215220 its reverse (22512770221), we get a palindrome (144589985441).

The spelling of 122077215220 in words is "one hundred twenty-two billion, seventy-seven million, two hundred fifteen thousand, two hundred twenty".