210112001001 has 80 divisors (see below), whose sum is σ = 361290682368. Its totient is φ = 119202192000.

The previous prime is 210112000963. The next prime is 210112001009. The reversal of 210112001001 is 100100211012.

It is a happy number.

It is not a de Polignac number, because 210112001001 - 2⁷ = 210112000873 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 (210112001009) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 112901811 + ... + 112903671.

Almost surely, 2^210112001001 is an apocalyptic number.

210112001001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210112001001 is a deficient number, since it is larger than the sum of its proper divisors (151178681367).

210112001001 is a wasteful number, since it uses less digits than its factorization.

210112001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204 (or 3195 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 210112001001 its reverse (100100211012), we get a palindrome (310212212013).

The spelling of 210112001001 in words is "two hundred ten billion, one hundred twelve million, one thousand, one".