121210220210001 has 16 divisors (see below), whose sum is σ = 175075299114240. Its totient is φ = 74590904740560.

The previous prime is 121210220209987. The next prime is 121210220210021. The reversal of 121210220210001 is 100012022012121.

It is not a de Polignac number, because 121210220210001 - 2⁷ = 121210220209873 is a prime.

It is a super-3 number, since 3×121210220210001³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121210220210021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9195124665 + ... + 9195137846.

It is an arithmetic number, because the mean of its divisors is an integer number (10942206194640).

Almost surely, 2^{121210220210001} is an apocalyptic number.

It is an amenable number.

121210220210001 is a deficient number, since it is larger than the sum of its proper divisors (53865078904239).

121210220210001 is an equidigital number, since it uses as much as digits as its factorization.

121210220210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18390262553 (or 18390262527 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121210220210001 its reverse (100012022012121), we get a palindrome (221222242222122).

The spelling of 121210220210001 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred twenty million, two hundred ten thousand, one".