210100201221001 has 12 divisors (see below), whose sum is σ = 260005658993472. Its totient is φ = 166233126239856.

The previous prime is 210100201220993. The next prime is 210100201221017. The reversal of 210100201221001 is 100122102001012.

It is not a de Polignac number, because 210100201221001 - 2³ = 210100201220993 is a prime.

It is a super-2 number, since 2×210100201221001² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (210100201225001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88799745741 + ... + 88799748106.

It is an arithmetic number, because the mean of its divisors is an integer number (21667138249456).

Almost surely, 2^{210100201221001} is an apocalyptic number.

It is an amenable number.

210100201221001 is a deficient number, since it is larger than the sum of its proper divisors (49905457772471).

210100201221001 is a wasteful number, since it uses less digits than its factorization.

210100201221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177599493880 (or 177599493867 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210100201221001 its reverse (100122102001012), we get a palindrome (310222303222013).

The spelling of 210100201221001 in words is "two hundred ten trillion, one hundred billion, two hundred one million, two hundred twenty-one thousand, one".