121020212122211 has 4 divisors (see below), whose sum is σ = 121028765406000. Its totient is φ = 121011658838424.

The previous prime is 121020212122207. The next prime is 121020212122219. The reversal of 121020212122211 is 112221212020121.

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 121020212122211 - 2² = 121020212122207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121020212122219) 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, 4276620671 + ... + 4276648968.

It is an arithmetic number, because the mean of its divisors is an integer number (30257191351500).

Almost surely, 2^{121020212122211} is an apocalyptic number.

121020212122211 is a deficient number, since it is larger than the sum of its proper divisors (8553283789).

121020212122211 is an equidigital number, since it uses as much as digits as its factorization.

121020212122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553283788.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121020212122211 its reverse (112221212020121), we get a palindrome (233241424142332).

The spelling of 121020212122211 in words is "one hundred twenty-one trillion, twenty billion, two hundred twelve million, one hundred twenty-two thousand, two hundred eleven".