2021102001212 has 48 divisors (see below), whose sum is σ = 4110683774400. Its totient is φ = 851527641600.

The previous prime is 2021102001211. The next prime is 2021102001223. The reversal of 2021102001212 is 2121002011202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021102001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2860664 + ... + 3496512.

It is an arithmetic number, because the mean of its divisors is an integer number (85639245300).

Almost surely, 2^{2021102001212} is an apocalyptic number.

It is an amenable number.

2021102001212 is an abundant number, since it is smaller than the sum of its proper divisors (2089581773188).

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

2021102001212 is a wasteful number, since it uses less digits than its factorization.

2021102001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637782 (or 637780 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021102001212 its reverse (2121002011202), we get a palindrome (4142104012414).

The spelling of 2021102001212 in words is "two trillion, twenty-one billion, one hundred two million, one thousand, two hundred twelve".