121222021985 has 8 divisors (see below), whose sum is σ = 151791053760. Its totient is φ = 92761199344.

The previous prime is 121222021981. The next prime is 121222022029. The reversal of 121222021985 is 589120222121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121222021985 - 2² = 121222021981 is a prime.

It is a super-2 number, since 2×121222021985² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121222021981) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 527052155 + ... + 527052384.

It is an arithmetic number, because the mean of its divisors is an integer number (18973881720).

Almost surely, 2^121222021985 is an apocalyptic number.

It is an amenable number.

121222021985 is a deficient number, since it is larger than the sum of its proper divisors (30569031775).

121222021985 is a wasteful number, since it uses less digits than its factorization.

121222021985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054104567.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 121222021985 in words is "one hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, nine hundred eighty-five".