122121101000 has 64 divisors (see below), whose sum is σ = 290028660480. Its totient is φ = 48119332800.

The previous prime is 122121100987. The next prime is 122121101023. The reversal of 122121101000 is 101121221.

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, 844352 + ... + 978351.

It is an arithmetic number, because the mean of its divisors is an integer number (4531697820).

Almost surely, 2^122121101000 is an apocalyptic number.

122121101000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121101000 is an abundant number, since it is smaller than the sum of its proper divisors (167907559480).

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

122121101000 is a wasteful number, since it uses less digits than its factorization.

122121101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822791 (or 1822777 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 122121101000 its reverse (101121221), we get a palindrome (122222222221).

The spelling of 122121101000 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred one thousand".