20012210001 has 60 divisors (see below), whose sum is σ = 36287710272. Its totient is φ = 10938300912.

The previous prime is 20012209913. The next prime is 20012210011. The reversal of 20012210001 is 10001221002.

It is not a de Polignac number, because 20012210001 - 2⁷ = 20012209873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20012210011) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 18325 + ... + 200898.

Almost surely, 2^20012210001 is an apocalyptic number.

20012210001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20012210001 is a deficient number, since it is larger than the sum of its proper divisors (16275500271).

20012210001 is a wasteful number, since it uses less digits than its factorization.

20012210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219272 (or 219256 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20012210001 its reverse (10001221002), we get a palindrome (30013431003).

The spelling of 20012210001 in words is "twenty billion, twelve million, two hundred ten thousand, one".