122180421 has 16 divisors (see below), whose sum is σ = 180223488. Its totient is φ = 73004400.

The previous prime is 122180419. The next prime is 122180437. The reversal of 122180421 is 124081221.

It is not a de Polignac number, because 122180421 - 2¹ = 122180419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122180441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23731 + ... + 28416.

It is an arithmetic number, because the mean of its divisors is an integer number (11263968).

Almost surely, 2^122180421 is an apocalyptic number.

122180421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122180421 is a deficient number, since it is larger than the sum of its proper divisors (58043067).

122180421 is a wasteful number, since it uses less digits than its factorization.

122180421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52232.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 122180421 is about 11053.5252747709. The cubic root of 122180421 is about 496.2119349349.

The spelling of 122180421 in words is "one hundred twenty-two million, one hundred eighty thousand, four hundred twenty-one".