2021012202195 has 64 divisors (see below), whose sum is σ = 4175779968000. Its totient is φ = 908232092928.

The previous prime is 2021012202191. The next prime is 2021012202211. The reversal of 2021012202195 is 5912022101202.

It is a happy number.

It is not a de Polignac number, because 2021012202195 - 2² = 2021012202191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2021012202191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18068290 + ... + 18179799.

It is an arithmetic number, because the mean of its divisors is an integer number (65246562000).

Almost surely, 2^{2021012202195} is an apocalyptic number.

2021012202195 is an abundant number, since it is smaller than the sum of its proper divisors (2154767765805).

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

2021012202195 is a wasteful number, since it uses less digits than its factorization.

2021012202195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36248169 (or 36248163 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 2021012202195 its reverse (5912022101202), we get a palindrome (7933034303397).

The spelling of 2021012202195 in words is "two trillion, twenty-one billion, twelve million, two hundred two thousand, one hundred ninety-five".