121012012210020 has 24 divisors (see below), whose sum is σ = 338833634188224. Its totient is φ = 32269869922656.

The previous prime is 121012012210003. The next prime is 121012012210031. The reversal of 121012012210020 is 20012210210121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008433435024 + ... + 1008433435143.

It is an arithmetic number, because the mean of its divisors is an integer number (14118068091176).

Almost surely, 2^{121012012210020} is an apocalyptic number.

121012012210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012012210020 is an abundant number, since it is smaller than the sum of its proper divisors (217821621978204).

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

121012012210020 is a wasteful number, since it uses less digits than its factorization.

121012012210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016866870179 (or 2016866870177 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121012012210020 its reverse (20012210210121), we get a palindrome (141024222420141).

The spelling of 121012012210020 in words is "one hundred twenty-one trillion, twelve billion, twelve million, two hundred ten thousand, twenty".