121202002021211 has 4 divisors (see below), whose sum is σ = 121208398936872. Its totient is φ = 121195605105552.

The previous prime is 121202002021141. The next prime is 121202002021231. The reversal of 121202002021211 is 112120200202121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121202002021211 - 2³⁸ = 120927124114267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121202002021211.

It is not an unprimeable number, because it can be changed into a prime (121202002021231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3198429410 + ... + 3198467303.

It is an arithmetic number, because the mean of its divisors is an integer number (30302099734218).

Almost surely, 2^{121202002021211} is an apocalyptic number.

121202002021211 is a deficient number, since it is larger than the sum of its proper divisors (6396915661).

121202002021211 is an equidigital number, since it uses as much as digits as its factorization.

121202002021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6396915660.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121202002021211 its reverse (112120200202121), we get a palindrome (233322202223332).

The spelling of 121202002021211 in words is "one hundred twenty-one trillion, two hundred two billion, two million, twenty-one thousand, two hundred eleven".