201021555121412 has 12 divisors (see below), whose sum is σ = 351788429228880. Its totient is φ = 100510575341736.

The previous prime is 201021555121393. The next prime is 201021555121433. The reversal of 201021555121412 is 214121555120102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48306962 + ... + 52303017.

It is an arithmetic number, because the mean of its divisors is an integer number (29315702435740).

Almost surely, 2^{201021555121412} is an apocalyptic number.

It is an amenable number.

201021555121412 is a deficient number, since it is larger than the sum of its proper divisors (150766874107468).

201021555121412 is a wasteful number, since it uses less digits than its factorization.

201021555121412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101109490 (or 101109488 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 32.

The spelling of 201021555121412 in words is "two hundred one trillion, twenty-one billion, five hundred fifty-five million, one hundred twenty-one thousand, four hundred twelve".