121230987 has 16 divisors (see below), whose sum is σ = 167485440. Its totient is φ = 77918400.

The previous prime is 121230979. The next prime is 121231003. The reversal of 121230987 is 789032121.

It is not a de Polignac number, because 121230987 - 2³ = 121230979 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (121230787) 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, 23814 + ... + 28452.

It is an arithmetic number, because the mean of its divisors is an integer number (10467840).

Almost surely, 2^121230987 is an apocalyptic number.

121230987 is a deficient number, since it is larger than the sum of its proper divisors (46254453).

121230987 is a wasteful number, since it uses less digits than its factorization.

121230987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4954.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 121230987 is about 11010.4944030684. The cubic root of 121230987 is about 494.9232775693.

The spelling of 121230987 in words is "one hundred twenty-one million, two hundred thirty thousand, nine hundred eighty-seven".