121307098890 has 32 divisors (see below), whose sum is σ = 301176247680. Its totient is φ = 31233091904.

The previous prime is 121307098873. The next prime is 121307098897. The reversal of 121307098890 is 98890703121.

It is a super-2 number, since 2×121307098890² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121307098897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69715854 + ... + 69717593.

It is an arithmetic number, because the mean of its divisors is an integer number (9411757740).

Almost surely, 2^121307098890 is an apocalyptic number.

121307098890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121307098890 is an abundant number, since it is smaller than the sum of its proper divisors (179869148790).

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

121307098890 is a wasteful number, since it uses less digits than its factorization.

121307098890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139433486.

The product of its (nonzero) digits is 217728, while the sum is 48.

The spelling of 121307098890 in words is "one hundred twenty-one billion, three hundred seven million, ninety-eight thousand, eight hundred ninety".