10200031121 has 4 divisors (see below), whose sum is σ = 11657178432. Its totient is φ = 8742883812.

The previous prime is 10200031057. The next prime is 10200031139. The reversal of 10200031121 is 12113000201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12113000201 = 1619 ⋅7481779.

It is a cyclic number.

It is not a de Polignac number, because 10200031121 - 2⁶ = 10200031057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10200031021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728573645 + ... + 728573658.

It is an arithmetic number, because the mean of its divisors is an integer number (2914294608).

Almost surely, 2^10200031121 is an apocalyptic number.

It is an amenable number.

10200031121 is a deficient number, since it is larger than the sum of its proper divisors (1457147311).

10200031121 is an equidigital number, since it uses as much as digits as its factorization.

10200031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457147310.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10200031121 its reverse (12113000201), we get a palindrome (22313031322).

The spelling of 10200031121 in words is "ten billion, two hundred million, thirty-one thousand, one hundred twenty-one".