122900561 has 8 divisors (see below), whose sum is σ = 141389184. Its totient is φ = 104644800.

The previous prime is 122900551. The next prime is 122900573. The reversal of 122900561 is 165009221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122900561 is a prime.

It is a super-2 number, since 2×122900561² = 30209095788229442, which 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 122900561.

It is not an unprimeable number, because it can be changed into a prime (122900551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57080 + ... + 59193.

It is an arithmetic number, because the mean of its divisors is an integer number (17673648).

Almost surely, 2^122900561 is an apocalyptic number.

It is an amenable number.

122900561 is a deficient number, since it is larger than the sum of its proper divisors (18488623).

122900561 is a wasteful number, since it uses less digits than its factorization.

122900561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116431.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 122900561 is about 11086.0525436244. The cubic root of 122900561 is about 497.1849284893.

Adding to 122900561 its reverse (165009221), we get a palindrome (287909782).

The spelling of 122900561 in words is "one hundred twenty-two million, nine hundred thousand, five hundred sixty-one".