121751647422 has 16 divisors (see below), whose sum is σ = 243514543872. Its totient is φ = 40582007640.

The previous prime is 121751647411. The next prime is 121751647429. The reversal of 121751647422 is 224746157121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121751647429) 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, 324598 + ... + 590649.

It is an arithmetic number, because the mean of its divisors is an integer number (15219658992).

Almost surely, 2^121751647422 is an apocalyptic number.

121751647422 is an abundant number, since it is smaller than the sum of its proper divisors (121762896450).

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

121751647422 is a wasteful number, since it uses less digits than its factorization.

121751647422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937423.

The product of its digits is 188160, while the sum is 42.

The spelling of 121751647422 in words is "one hundred twenty-one billion, seven hundred fifty-one million, six hundred forty-seven thousand, four hundred twenty-two".