151220122 has 4 divisors (see below), whose sum is σ = 226830186. Its totient is φ = 75610060.

The previous prime is 151220119. The next prime is 151220137. The reversal of 151220122 is 221022151.

It is a happy number.

151220122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 106316721 + 44903401 = 10311^2 + 6701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 151220096 and 151220105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37805029 + ... + 37805032.

Almost surely, 2^151220122 is an apocalyptic number.

151220122 is a deficient number, since it is larger than the sum of its proper divisors (75610064).

151220122 is an equidigital number, since it uses as much as digits as its factorization.

151220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75610063.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 151220122 is about 12297.1591028172. The cubic root of 151220122 is about 532.7660328072.

Adding to 151220122 its reverse (221022151), we get a palindrome (372242273).

The spelling of 151220122 in words is "one hundred fifty-one million, two hundred twenty thousand, one hundred twenty-two".