20101201221202 has 16 divisors (see below), whose sum is σ = 30799264625280. Its totient is φ = 9834862111408.

The previous prime is 20101201221139. The next prime is 20101201221259. The reversal of 20101201221202 is 20212210210102.

It is a happy number.

It is a super-2 number, since 2×20101201221202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20117608 + ... + 21093139.

It is an arithmetic number, because the mean of its divisors is an integer number (1924954039080).

Almost surely, 2^{20101201221202} is an apocalyptic number.

20101201221202 is a deficient number, since it is larger than the sum of its proper divisors (10698063404078).

20101201221202 is a wasteful number, since it uses less digits than its factorization.

20101201221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41215985.

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

Adding to 20101201221202 its reverse (20212210210102), we get a palindrome (40313411431304).

The spelling of 20101201221202 in words is "twenty trillion, one hundred one billion, two hundred one million, two hundred twenty-one thousand, two hundred two".