122151566228 has 6 divisors (see below), whose sum is σ = 213765240906. Its totient is φ = 61075783112.

The previous prime is 122151566191. The next prime is 122151566281. The reversal of 122151566228 is 822665151221.

It can be written as a sum of positive squares in only one way, i.e., 74872282384 + 47279283844 = 273628^2 + 217438^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15268945775 + ... + 15268945782.

It is an arithmetic number, because the mean of its divisors is an integer number (35627540151).

Almost surely, 2^122151566228 is an apocalyptic number.

It is an amenable number.

122151566228 is a deficient number, since it is larger than the sum of its proper divisors (91613674678).

122151566228 is a wasteful number, since it uses less digits than its factorization.

122151566228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30537891561 (or 30537891559 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The spelling of 122151566228 in words is "one hundred twenty-two billion, one hundred fifty-one million, five hundred sixty-six thousand, two hundred twenty-eight".