100020121201 has 32 divisors (see below), whose sum is σ = 134450604288. Its totient is φ = 71857981440.

The previous prime is 100020121099. The next prime is 100020121211. The reversal of 100020121201 is 102121020001.

It is not a de Polignac number, because 100020121201 - 2⁷ = 100020121073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100020121211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 799561 + ... + 916153.

It is an arithmetic number, because the mean of its divisors is an integer number (4201581384).

Almost surely, 2^100020121201 is an apocalyptic number.

100020121201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100020121201 is a deficient number, since it is larger than the sum of its proper divisors (34430483087).

100020121201 is a wasteful number, since it uses less digits than its factorization.

100020121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117481.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100020121201 its reverse (102121020001), we get a palindrome (202141141202).

The spelling of 100020121201 in words is "one hundred billion, twenty million, one hundred twenty-one thousand, two hundred one".