10021210021999 has 16 divisors (see below), whose sum is σ = 11507738474880. Its totient is φ = 8630610536160.

The previous prime is 10021210021987. The next prime is 10021210022027. The reversal of 10021210021999 is 99912001212001.

It is a cyclic number.

It is not a de Polignac number, because 10021210021999 - 2¹⁹ = 10021209497711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021210021919) 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, 23429512 + ... + 23853394.

It is an arithmetic number, because the mean of its divisors is an integer number (719233654680).

Almost surely, 2^{10021210021999} is an apocalyptic number.

10021210021999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

10021210021999 is a deficient number, since it is larger than the sum of its proper divisors (1486528452881).

10021210021999 is a wasteful number, since it uses less digits than its factorization.

10021210021999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537030.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 10021210021999 in words is "ten trillion, twenty-one billion, two hundred ten million, twenty-one thousand, nine hundred ninety-nine".