122010111021221 has 2 divisors, whose sum is σ = 122010111021222. Its totient is φ = 122010111021220.

The previous prime is 122010111021133. The next prime is 122010111021257. The reversal of 122010111021221 is 122120111010221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73657349452996 + 48352761568225 = 8582386^2 + 6953615^2 .

It is a cyclic number.

It is not a de Polignac number, because 122010111021221 - 2²⁶ = 122010043912357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122010111021221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122010111020221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61005055510610 + 61005055510611.

It is an arithmetic number, because the mean of its divisors is an integer number (61005055510611).

Almost surely, 2^{122010111021221} is an apocalyptic number.

It is an amenable number.

122010111021221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122010111021221 is an equidigital number, since it uses as much as digits as its factorization.

122010111021221 is an evil number, because the sum of its binary digits is even.

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

Adding to 122010111021221 its reverse (122120111010221), we get a palindrome (244130222031442).

The spelling of 122010111021221 in words is "one hundred twenty-two trillion, ten billion, one hundred eleven million, twenty-one thousand, two hundred twenty-one".