121022100312 has 32 divisors (see below), whose sum is σ = 310732422000. Its totient is φ = 39250410624.

The previous prime is 121022100257. The next prime is 121022100319. The reversal of 121022100312 is 213001220121.

It is a junction number, because it is equal to n+sod(n) for n = 121022100291 and 121022100300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022100319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68142187 + ... + 68143962.

Almost surely, 2^121022100312 is an apocalyptic number.

121022100312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121022100312 is an abundant number, since it is smaller than the sum of its proper divisors (189710321688).

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

121022100312 is a wasteful number, since it uses less digits than its factorization.

121022100312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136286195 (or 136286191 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121022100312 its reverse (213001220121), we get a palindrome (334023320433).

The spelling of 121022100312 in words is "one hundred twenty-one billion, twenty-two million, one hundred thousand, three hundred twelve".