120222011987 has 16 divisors (see below), whose sum is σ = 151125932544. Its totient is φ = 93679482600.

The previous prime is 120222011983. The next prime is 120222011993. The reversal of 120222011987 is 789110222021.

It is not a de Polignac number, because 120222011987 - 2² = 120222011983 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120222011981) 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, 6442439 + ... + 6461072.

It is an arithmetic number, because the mean of its divisors is an integer number (9445370784).

Almost surely, 2^120222011987 is an apocalyptic number.

120222011987 is a deficient number, since it is larger than the sum of its proper divisors (30903920557).

120222011987 is an equidigital number, since it uses as much as digits as its factorization.

120222011987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12903551 (or 12903529 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 120222011987 in words is "one hundred twenty billion, two hundred twenty-two million, eleven thousand, nine hundred eighty-seven".