2021012121202 has 32 divisors (see below), whose sum is σ = 3068256340224. Its totient is φ = 998306400000.

The previous prime is 2021012121197. The next prime is 2021012121217. The reversal of 2021012121202 is 2021212101202.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198269418 + ... + 198279610.

It is an arithmetic number, because the mean of its divisors is an integer number (95883010632).

Almost surely, 2^{2021012121202} is an apocalyptic number.

2021012121202 is a deficient number, since it is larger than the sum of its proper divisors (1047244219022).

2021012121202 is a wasteful number, since it uses less digits than its factorization.

2021012121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12354.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021012121202 its reverse (2021212101202), we get a palindrome (4042224222404).

The spelling of 2021012121202 in words is "two trillion, twenty-one billion, twelve million, one hundred twenty-one thousand, two hundred two".