121021101012 has 72 divisors (see below), whose sum is σ = 328638207744. Its totient is φ = 34561419648.

The previous prime is 121021101007. The next prime is 121021101013. The reversal of 121021101012 is 210101120121.

It is a super-2 number, since 2×121021101012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021101013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1251088 + ... + 1344344.

It is an arithmetic number, because the mean of its divisors is an integer number (4564419552).

Almost surely, 2^121021101012 is an apocalyptic number.

121021101012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121021101012 is an abundant number, since it is smaller than the sum of its proper divisors (207617106732).

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

121021101012 is a wasteful number, since it uses less digits than its factorization.

121021101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95485 (or 95476 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121021101012 its reverse (210101120121), we get a palindrome (331122221133).

The spelling of 121021101012 in words is "one hundred twenty-one billion, twenty-one million, one hundred one thousand, twelve".