10002120212985 has 16 divisors (see below), whose sum is σ = 16024095324864. Its totient is φ = 5327563118912.

The previous prime is 10002120212927. The next prime is 10002120213091. The reversal of 10002120212985 is 58921202120001.

It is a cyclic number.

It is not a de Polignac number, because 10002120212985 - 2⁶ = 10002120212921 is a prime.

It is a super-2 number, since 2×10002120212985² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431300187 + ... + 431323376.

It is an arithmetic number, because the mean of its divisors is an integer number (1001505957804).

Almost surely, 2^{10002120212985} is an apocalyptic number.

10002120212985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10002120212985 is a deficient number, since it is larger than the sum of its proper divisors (6021975111879).

10002120212985 is an equidigital number, since it uses as much as digits as its factorization.

10002120212985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862624344.

The product of its (nonzero) digits is 5760, while the sum is 33.

Adding to 10002120212985 its reverse (58921202120001), we get a palindrome (68923322332986).

The spelling of 10002120212985 in words is "ten trillion, two billion, one hundred twenty million, two hundred twelve thousand, nine hundred eighty-five".