100020121202 has 4 divisors (see below), whose sum is σ = 150030181806. Its totient is φ = 50010060600.

The previous prime is 100020121099. The next prime is 100020121211. The reversal of 100020121202 is 202121020001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202121020001 = 223 ⋅906372287.

It can be written as a sum of positive squares in only one way, i.e., 96291675481 + 3728445721 = 310309^2 + 61061^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25005030299 + ... + 25005030302.

Almost surely, 2^100020121202 is an apocalyptic number.

100020121202 is a deficient number, since it is larger than the sum of its proper divisors (50010060604).

100020121202 is an equidigital number, since it uses as much as digits as its factorization.

100020121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50010060603.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100020121202 its reverse (202121020001), we get a palindrome (302141141203).

The spelling of 100020121202 in words is "one hundred billion, twenty million, one hundred twenty-one thousand, two hundred two".