2120002121986 has 16 divisors (see below), whose sum is σ = 3654368303040. Its totient is φ = 903552600240.

The previous prime is 2120002121983. The next prime is 2120002121987. The reversal of 2120002121986 is 6891212000212.

It is not an unprimeable number, because it can be changed into a prime (2120002121981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418308856 + ... + 418313923.

It is an arithmetic number, because the mean of its divisors is an integer number (228398018940).

Almost surely, 2^{2120002121986} is an apocalyptic number.

2120002121986 is a deficient number, since it is larger than the sum of its proper divisors (1534366181054).

2120002121986 is a wasteful number, since it uses less digits than its factorization.

2120002121986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836622969.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 2120002121986 in words is "two trillion, one hundred twenty billion, two million, one hundred twenty-one thousand, nine hundred eighty-six".