121107772 has 6 divisors (see below), whose sum is σ = 211938608. Its totient is φ = 60553884.

The previous prime is 121107757. The next prime is 121107773. The reversal of 121107772 is 277701121.

It is a self number, because there is not a number n which added to its sum of digits gives 121107772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121107773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15138468 + ... + 15138475.

Almost surely, 2^121107772 is an apocalyptic number.

It is an amenable number.

121107772 is a deficient number, since it is larger than the sum of its proper divisors (90830836).

121107772 is a wasteful number, since it uses less digits than its factorization.

121107772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30276947 (or 30276945 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 28.

The square root of 121107772 is about 11004.8976369615. The cubic root of 121107772 is about 494.7555464063.

Adding to 121107772 its reverse (277701121), we get a palindrome (398808893).

The spelling of 121107772 in words is "one hundred twenty-one million, one hundred seven thousand, seven hundred seventy-two".