210110100021121 has 24 divisors (see below), whose sum is σ = 218258091323712. Its totient is φ = 202244810102400.

The previous prime is 210110100021097. The next prime is 210110100021131. The reversal of 210110100021121 is 121120001011012.

It is a happy number.

It is not a de Polignac number, because 210110100021121 - 2⁵ = 210110100021089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210110100021131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35338900 + ... + 40854106.

It is an arithmetic number, because the mean of its divisors is an integer number (9094087138488).

Almost surely, 2^{210110100021121} is an apocalyptic number.

It is an amenable number.

210110100021121 is a deficient number, since it is larger than the sum of its proper divisors (8147991302591).

210110100021121 is a wasteful number, since it uses less digits than its factorization.

210110100021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515593 (or 5515552 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210110100021121 its reverse (121120001011012), we get a palindrome (331230101032133).

The spelling of 210110100021121 in words is "two hundred ten trillion, one hundred ten billion, one hundred million, twenty-one thousand, one hundred twenty-one".