156121022 has 8 divisors (see below), whose sum is σ = 241735872. Its totient is φ = 75542400.

The previous prime is 156121001. The next prime is 156121037. The reversal of 156121022 is 220121651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 156120985 and 156121003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258979 + ... + 1259102.

It is an arithmetic number, because the mean of its divisors is an integer number (30216984).

Almost surely, 2^156121022 is an apocalyptic number.

156121022 is a deficient number, since it is larger than the sum of its proper divisors (85614850).

156121022 is a wasteful number, since it uses less digits than its factorization.

156121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518114.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 156121022 is about 12494.8398148996. The cubic root of 156121022 is about 538.4604318836.

Adding to 156121022 its reverse (220121651), we get a palindrome (376242673).

The spelling of 156121022 in words is "one hundred fifty-six million, one hundred twenty-one thousand, twenty-two".