122100005650 has 72 divisors (see below), whose sum is σ = 264712432320. Its totient is φ = 41779211040.

The previous prime is 122100005627. The next prime is 122100005663. The reversal of 122100005650 is 56500001221.

It is a super-2 number, since 2×122100005650² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1182811 + ... + 1281889.

It is an arithmetic number, because the mean of its divisors is an integer number (3676561560).

Almost surely, 2^122100005650 is an apocalyptic number.

122100005650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122100005650 is an abundant number, since it is smaller than the sum of its proper divisors (142612426670).

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

122100005650 is a wasteful number, since it uses less digits than its factorization.

122100005650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99608 (or 99596 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 122100005650 its reverse (56500001221), we get a palindrome (178600006871).

The spelling of 122100005650 in words is "one hundred twenty-two billion, one hundred million, five thousand, six hundred fifty".