20101120331 has 16 divisors (see below), whose sum is σ = 21456705600. Its totient is φ = 18765293568.

The previous prime is 20101120327. The next prime is 20101120337. The reversal of 20101120331 is 13302110102.

It is a cyclic number.

It is not a de Polignac number, because 20101120331 - 2² = 20101120327 is a prime.

It is a super-2 number, since 2×20101120331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20101120337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1283315 + ... + 1298883.

It is an arithmetic number, because the mean of its divisors is an integer number (1341044100).

Almost surely, 2^20101120331 is an apocalyptic number.

20101120331 is a deficient number, since it is larger than the sum of its proper divisors (1355585269).

20101120331 is a wasteful number, since it uses less digits than its factorization.

20101120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16198.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20101120331 its reverse (13302110102), we get a palindrome (33403230433).

The spelling of 20101120331 in words is "twenty billion, one hundred one million, one hundred twenty thousand, three hundred thirty-one".