151540222212 has 36 divisors (see below), whose sum is σ = 386574328140. Its totient is φ = 50049980352.

The previous prime is 151540222177. The next prime is 151540222261. The reversal of 151540222212 is 212222045151.

151540222212 is a `hidden beast` number, since 15 + 15 + 402 + 22 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 89870446656 + 61669775556 = 299784^2 + 248334^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19305483 + ... + 19313330.

Almost surely, 2^151540222212 is an apocalyptic number.

151540222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

151540222212 is an abundant number, since it is smaller than the sum of its proper divisors (235034105928).

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

151540222212 is a wasteful number, since it uses less digits than its factorization.

151540222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38618932 (or 38618927 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 151540222212 its reverse (212222045151), we get a palindrome (363762267363).

The spelling of 151540222212 in words is "one hundred fifty-one billion, five hundred forty million, two hundred twenty-two thousand, two hundred twelve".