122101988 has 6 divisors (see below), whose sum is σ = 213678486. Its totient is φ = 61050992.

The previous prime is 122101949. The next prime is 122102011. The reversal of 122101988 is 889101221.

It can be written as a sum of positive squares in only one way, i.e., 112317604 + 9784384 = 10598^2 + 3128^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15262745 + ... + 15262752.

It is an arithmetic number, because the mean of its divisors is an integer number (35613081).

Almost surely, 2^122101988 is an apocalyptic number.

It is an amenable number.

122101988 is a deficient number, since it is larger than the sum of its proper divisors (91576498).

122101988 is a wasteful number, since it uses less digits than its factorization.

122101988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30525501 (or 30525499 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 122101988 is about 11049.9768325549. The cubic root of 122101988 is about 496.1057320988.

The spelling of 122101988 in words is "one hundred twenty-two million, one hundred one thousand, nine hundred eighty-eight".