20012331101 has 4 divisors (see below), whose sum is σ = 22871235552. Its totient is φ = 17153426652.

The previous prime is 20012331091. The next prime is 20012331121. The reversal of 20012331101 is 10113321002.

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: 10113321002 = 2 ⋅5056660501.

It is a cyclic number.

It is not a de Polignac number, because 20012331101 - 2¹⁸ = 20012068957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012331121) 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, 1429452215 + ... + 1429452228.

It is an arithmetic number, because the mean of its divisors is an integer number (5717808888).

Almost surely, 2^20012331101 is an apocalyptic number.

It is an amenable number.

20012331101 is a deficient number, since it is larger than the sum of its proper divisors (2858904451).

20012331101 is an equidigital number, since it uses as much as digits as its factorization.

20012331101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858904450.

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

Adding to 20012331101 its reverse (10113321002), we get a palindrome (30125652103).

The spelling of 20012331101 in words is "twenty billion, twelve million, three hundred thirty-one thousand, one hundred one".