122301561 has 4 divisors (see below), whose sum is σ = 163068752. Its totient is φ = 81534372.

The previous prime is 122301533. The next prime is 122301583. The reversal of 122301561 is 165103221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-122301561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122341561) 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, 20383591 + ... + 20383596.

It is an arithmetic number, because the mean of its divisors is an integer number (40767188).

Almost surely, 2^122301561 is an apocalyptic number.

It is an amenable number.

122301561 is a deficient number, since it is larger than the sum of its proper divisors (40767191).

122301561 is an equidigital number, since it uses as much as digits as its factorization.

122301561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40767190.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 122301561 is about 11059.0036169630. The cubic root of 122301561 is about 496.3758762545.

Adding to 122301561 its reverse (165103221), we get a palindrome (287404782).

The spelling of 122301561 in words is "one hundred twenty-two million, three hundred one thousand, five hundred sixty-one".