100210121001 has 8 divisors (see below), whose sum is σ = 148459438560. Its totient is φ = 66806747316.

The previous prime is 100210120979. The next prime is 100210121021. The reversal of 100210121001 is 100121012001.

It is a happy number.

It is not a de Polignac number, because 100210121001 - 2⁷ = 100210120873 is a prime.

It is a super-2 number, since 2×100210121001² (a number of 23 digits) contains 22 as substring.

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 (100210121021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855742955 + ... + 1855743008.

It is an arithmetic number, because the mean of its divisors is an integer number (18557429820).

Almost surely, 2^100210121001 is an apocalyptic number.

It is an amenable number.

100210121001 is a deficient number, since it is larger than the sum of its proper divisors (48249317559).

100210121001 is an equidigital number, since it uses as much as digits as its factorization.

100210121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711485972 (or 3711485966 counting only the distinct ones).

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

Adding to 100210121001 its reverse (100121012001), we get a palindrome (200331133002).

The spelling of 100210121001 in words is "one hundred billion, two hundred ten million, one hundred twenty-one thousand, one".