20100201121 has 32 divisors (see below), whose sum is σ = 27001675008. Its totient is φ = 14450192640.

The previous prime is 20100201103. The next prime is 20100201167. The reversal of 20100201121 is 12110200102.

It is not a de Polignac number, because 20100201121 - 2¹⁵ = 20100168353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20100201098 and 20100201107.

It is not an unprimeable number, because it can be changed into a prime (20100201721) 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, 2555631 + ... + 2563483.

It is an arithmetic number, because the mean of its divisors is an integer number (843802344).

Almost surely, 2^20100201121 is an apocalyptic number.

It is an amenable number.

20100201121 is a deficient number, since it is larger than the sum of its proper divisors (6901473887).

20100201121 is a wasteful number, since it uses less digits than its factorization.

20100201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441.

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

Adding to 20100201121 its reverse (12110200102), we get a palindrome (32210401223).

The spelling of 20100201121 in words is "twenty billion, one hundred million, two hundred one thousand, one hundred twenty-one".