122069721 has 4 divisors (see below), whose sum is σ = 162759632. Its totient is φ = 81379812.

The previous prime is 122069683. The next prime is 122069743. The reversal of 122069721 is 127960221.

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 not a de Polignac number, because 122069721 - 2⁷ = 122069593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122069791) 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, 20344951 + ... + 20344956.

It is an arithmetic number, because the mean of its divisors is an integer number (40689908).

Almost surely, 2^122069721 is an apocalyptic number.

It is an amenable number.

122069721 is a deficient number, since it is larger than the sum of its proper divisors (40689911).

122069721 is an equidigital number, since it uses as much as digits as its factorization.

122069721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40689910.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 122069721 is about 11048.5166877731. The cubic root of 122069721 is about 496.0620275034.

The spelling of 122069721 in words is "one hundred twenty-two million, sixty-nine thousand, seven hundred twenty-one".