121102021120211 has 4 divisors (see below), whose sum is σ = 121129192320792. Its totient is φ = 121074849919632.

The previous prime is 121102021120189. The next prime is 121102021120273. The reversal of 121102021120211 is 112021120201121.

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 121102021120211 - 2³⁸ = 120827143213267 is a prime.

It is a super-2 number, since 2×121102021120211² (a number of 29 digits) contains 22 as substring.

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 121102021120211.

It is not an unprimeable number, because it can be changed into a prime (121102021120291) 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, 13585593605 + ... + 13585602518.

It is an arithmetic number, because the mean of its divisors is an integer number (30282298080198).

Almost surely, 2^{121102021120211} is an apocalyptic number.

121102021120211 is a deficient number, since it is larger than the sum of its proper divisors (27171200581).

121102021120211 is an equidigital number, since it uses as much as digits as its factorization.

121102021120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27171200580.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121102021120211 its reverse (112021120201121), we get a palindrome (233123141321332).

The spelling of 121102021120211 in words is "one hundred twenty-one trillion, one hundred two billion, twenty-one million, one hundred twenty thousand, two hundred eleven".