122001511 has 2 divisors, whose sum is σ = 122001512. Its totient is φ = 122001510.

The previous prime is 122001491. The next prime is 122001533. The reversal of 122001511 is 115100221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122001511 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122001491 and 122001500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122001611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61000755 + 61000756.

It is an arithmetic number, because the mean of its divisors is an integer number (61000756).

Almost surely, 2^122001511 is an apocalyptic number.

122001511 is a deficient number, since it is larger than the sum of its proper divisors (1).

122001511 is an equidigital number, since it uses as much as digits as its factorization.

122001511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 122001511 is about 11045.4294167316. The cubic root of 122001511 is about 495.9696139359.

Adding to 122001511 its reverse (115100221), we get a palindrome (237101732).

The spelling of 122001511 in words is "one hundred twenty-two million, one thousand, five hundred eleven".