20100212001 has 48 divisors (see below), whose sum is σ = 30090101184. Its totient is φ = 12919761792.

The previous prime is 20100211997. The next prime is 20100212009. The reversal of 20100212001 is 10021200102.

It is not a de Polignac number, because 20100212001 - 2² = 20100211997 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 (20100212009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22763106 + ... + 22763988.

It is an arithmetic number, because the mean of its divisors is an integer number (626877108).

Almost surely, 2^20100212001 is an apocalyptic number.

It is an amenable number.

20100212001 is a deficient number, since it is larger than the sum of its proper divisors (9989889183).

20100212001 is a wasteful number, since it uses less digits than its factorization.

20100212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1467 counting only the distinct ones).

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

Adding to 20100212001 its reverse (10021200102), we get a palindrome (30121412103).

The spelling of 20100212001 in words is "twenty billion, one hundred million, two hundred twelve thousand, one".