21021000200002 has 16 divisors (see below), whose sum is σ = 34424894822400. Its totient is φ = 9547529397840.

The previous prime is 21021000199957. The next prime is 21021000200023. The reversal of 21021000200002 is 20000200012012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373505877 + ... + 373562152.

It is an arithmetic number, because the mean of its divisors is an integer number (2151555926400).

Almost surely, 2^{21021000200002} is an apocalyptic number.

21021000200002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21021000200002 is a deficient number, since it is larger than the sum of its proper divisors (13403894622398).

21021000200002 is a wasteful number, since it uses less digits than its factorization.

21021000200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747069321.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21021000200002 its reverse (20000200012012), we get a palindrome (41021200212014).

The spelling of 21021000200002 in words is "twenty-one trillion, twenty-one billion, two hundred thousand, two".