20212100122202 has 4 divisors (see below), whose sum is σ = 30318150183306. Its totient is φ = 10106050061100.

The previous prime is 20212100122147. The next prime is 20212100122211. The reversal of 20212100122202 is 20222100121202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19014649215241 + 1197450906961 = 4360579^2 + 1094281^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5053025030549 + ... + 5053025030552.

Almost surely, 2^{20212100122202} is an apocalyptic number.

20212100122202 is a deficient number, since it is larger than the sum of its proper divisors (10106050061104).

20212100122202 is a wasteful number, since it uses less digits than its factorization.

20212100122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106050061103.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20212100122202 its reverse (20222100121202), we get a palindrome (40434200243404).

The spelling of 20212100122202 in words is "twenty trillion, two hundred twelve billion, one hundred million, one hundred twenty-two thousand, two hundred two".