1210212121201 has 8 divisors (see below), whose sum is σ = 1211138058240. Its totient is φ = 1209286458048.

The previous prime is 1210212121171. The next prime is 1210212121211. The reversal of 1210212121201 is 1021212120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210212121201 - 2²⁷ = 1210077903473 is a prime.

It is a super-2 number, since 2×1210212121201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210212121211) 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, 9252480 + ... + 9382366.

It is an arithmetic number, because the mean of its divisors is an integer number (151392257280).

Almost surely, 2^{1210212121201} is an apocalyptic number.

It is an amenable number.

1210212121201 is a deficient number, since it is larger than the sum of its proper divisors (925937039).

1210212121201 is a wasteful number, since it uses less digits than its factorization.

1210212121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136943.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1210212121201 its reverse (1021212120121), we get a palindrome (2231424241322).

The spelling of 1210212121201 in words is "one trillion, two hundred ten billion, two hundred twelve million, one hundred twenty-one thousand, two hundred one".