121912794510 has 64 divisors (see below), whose sum is σ = 315228920832. Its totient is φ = 29996804736.

The previous prime is 121912794499. The next prime is 121912794527. The reversal of 121912794510 is 15497219121.

It is a super-2 number, since 2×121912794510² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 890457 + ... + 1018203.

It is an arithmetic number, because the mean of its divisors is an integer number (4925451888).

Almost surely, 2^121912794510 is an apocalyptic number.

121912794510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121912794510 is an abundant number, since it is smaller than the sum of its proper divisors (193316126322).

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

121912794510 is a wasteful number, since it uses less digits than its factorization.

121912794510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130217.

The product of its (nonzero) digits is 45360, while the sum is 42.

The spelling of 121912794510 in words is "one hundred twenty-one billion, nine hundred twelve million, seven hundred ninety-four thousand, five hundred ten".