122133300211991 has 2 divisors, whose sum is σ = 122133300211992. Its totient is φ = 122133300211990.

The previous prime is 122133300211921. The next prime is 122133300212087. The reversal of 122133300211991 is 199112003331221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122133300211991 - 2¹⁴ = 122133300195607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122133300211921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61066650105995 + 61066650105996.

It is an arithmetic number, because the mean of its divisors is an integer number (61066650105996).

Almost surely, 2^{122133300211991} is an apocalyptic number.

122133300211991 is a deficient number, since it is larger than the sum of its proper divisors (1).

122133300211991 is an equidigital number, since it uses as much as digits as its factorization.

122133300211991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 122133300211991 in words is "one hundred twenty-two trillion, one hundred thirty-three billion, three hundred million, two hundred eleven thousand, nine hundred ninety-one".