122036721 has 16 divisors (see below), whose sum is σ = 166053120. Its totient is φ = 79698960.

The previous prime is 122036671. The next prime is 122036737. The reversal of 122036721 is 127630221.

It is not a de Polignac number, because 122036721 - 2²³ = 113648113 is a prime.

It is a super-2 number, since 2×122036721² = 29785922544863682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122036691 and 122036700.

It is not an unprimeable number, because it can be changed into a prime (122036741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57546 + ... + 59628.

It is an arithmetic number, because the mean of its divisors is an integer number (10378320).

Almost surely, 2^122036721 is an apocalyptic number.

It is an amenable number.

122036721 is a deficient number, since it is larger than the sum of its proper divisors (44016399).

122036721 is a wasteful number, since it uses less digits than its factorization.

122036721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 122036721 is about 11047.0231736880. The cubic root of 122036721 is about 496.0173221166.

Adding to 122036721 its reverse (127630221), we get a palindrome (249666942).

The spelling of 122036721 in words is "one hundred twenty-two million, thirty-six thousand, seven hundred twenty-one".