20311210101 has 16 divisors (see below), whose sum is σ = 33331217024. Its totient is φ = 10713605184.

The previous prime is 20311210099. The next prime is 20311210109. The reversal of 20311210101 is 10101211302.

It is not a de Polignac number, because 20311210101 - 2¹ = 20311210099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311210109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37199746 + ... + 37200291.

It is an arithmetic number, because the mean of its divisors is an integer number (2083201064).

Almost surely, 2^20311210101 is an apocalyptic number.

20311210101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20311210101 is a deficient number, since it is larger than the sum of its proper divisors (13020006923).

20311210101 is a wasteful number, since it uses less digits than its factorization.

20311210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74400060.

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

Adding to 20311210101 its reverse (10101211302), we get a palindrome (30412421403).

The spelling of 20311210101 in words is "twenty billion, three hundred eleven million, two hundred ten thousand, one hundred one".