122940977890 has 16 divisors (see below), whose sum is σ = 224094948480. Its totient is φ = 48553904880.

The previous prime is 122940977867. The next prime is 122940977903. The reversal of 122940977890 is 98779049221.

It is a super-2 number, since 2×122940977890² (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 7 ways as a sum of consecutive naturals, for example, 77809956 + ... + 77811535.

It is an arithmetic number, because the mean of its divisors is an integer number (14005934280).

Almost surely, 2^122940977890 is an apocalyptic number.

122940977890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122940977890 is a deficient number, since it is larger than the sum of its proper divisors (101153970590).

122940977890 is a wasteful number, since it uses less digits than its factorization.

122940977890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155621577.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 122940977890 in words is "one hundred twenty-two billion, nine hundred forty million, nine hundred seventy-seven thousand, eight hundred ninety".