122210220987 has 16 divisors (see below), whose sum is σ = 188924014080. Its totient is φ = 77931155016.

The previous prime is 122210220961. The next prime is 122210221087. The reversal of 122210220987 is 789022012221.

It is not a de Polignac number, because 122210220987 - 2¹¹ = 122210218939 is a prime.

It is a super-2 number, since 2×122210220987² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122210220917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98397303 + ... + 98398544.

It is an arithmetic number, because the mean of its divisors is an integer number (11807750880).

Almost surely, 2^122210220987 is an apocalyptic number.

122210220987 is a deficient number, since it is larger than the sum of its proper divisors (66713793093).

122210220987 is a wasteful number, since it uses less digits than its factorization.

122210220987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196795879 (or 196795873 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 122210220987 in words is "one hundred twenty-two billion, two hundred ten million, two hundred twenty thousand, nine hundred eighty-seven".