20101200121202 has 16 divisors (see below), whose sum is σ = 30156756136920. Its totient is φ = 10048948234752.

The previous prime is 20101200121183. The next prime is 20101200121217. The reversal of 20101200121202 is 20212100210102.

It can be written as a sum of positive squares in 4 ways, for example, as 18978386503561 + 1122813617641 = 4356419^2 + 1059629^2 .

It is a super-2 number, since 2×20101200121202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 393090428 + ... + 393141560.

Almost surely, 2^{20101200121202} is an apocalyptic number.

20101200121202 is a deficient number, since it is larger than the sum of its proper divisors (10055556015718).

20101200121202 is a wasteful number, since it uses less digits than its factorization.

20101200121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79597.

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

Adding to 20101200121202 its reverse (20212100210102), we get a palindrome (40313300331304).

The spelling of 20101200121202 in words is "twenty trillion, one hundred one billion, two hundred million, one hundred twenty-one thousand, two hundred two".