121031156 has 12 divisors (see below), whose sum is σ = 212079168. Its totient is φ = 60437112.

The previous prime is 121031149. The next prime is 121031201. The reversal of 121031156 is 651130121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16076 + ... + 22371.

It is an arithmetic number, because the mean of its divisors is an integer number (17673264).

Almost surely, 2^121031156 is an apocalyptic number.

It is an amenable number.

121031156 is a deficient number, since it is larger than the sum of its proper divisors (91048012).

121031156 is a wasteful number, since it uses less digits than its factorization.

121031156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39238 (or 39236 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 121031156 is about 11001.4160906676. The cubic root of 121031156 is about 494.6511925552.

Adding to 121031156 its reverse (651130121), we get a palindrome (772161277).

The spelling of 121031156 in words is "one hundred twenty-one million, thirty-one thousand, one hundred fifty-six".