121762720122 has 16 divisors (see below), whose sum is σ = 249465085632. Its totient is φ = 39597632480.

The previous prime is 121762720109. The next prime is 121762720127. The reversal of 121762720122 is 221027267121.

It is not an unprimeable number, because it can be changed into a prime (121762720127) 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, 247484958 + ... + 247485449.

It is an arithmetic number, because the mean of its divisors is an integer number (15591567852).

Almost surely, 2^121762720122 is an apocalyptic number.

121762720122 is an abundant number, since it is smaller than the sum of its proper divisors (127702365510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121762720122 is a wasteful number, since it uses less digits than its factorization.

121762720122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494970453.

The product of its (nonzero) digits is 9408, while the sum is 33.

Adding to 121762720122 its reverse (221027267121), we get a palindrome (342789987243).

The spelling of 121762720122 in words is "one hundred twenty-one billion, seven hundred sixty-two million, seven hundred twenty thousand, one hundred twenty-two".