221020102100002 has 16 divisors (see below), whose sum is σ = 331572187051200. Its totient is φ = 110496040668720.

The previous prime is 221020102099999. The next prime is 221020102100069. The reversal of 221020102100002 is 200001201020122.

It is a happy number.

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, 516936352 + ... + 517363732.

It is an arithmetic number, because the mean of its divisors is an integer number (20723261690700).

Almost surely, 2^{221020102100002} is an apocalyptic number.

221020102100002 is a deficient number, since it is larger than the sum of its proper divisors (110552084951198).

221020102100002 is a wasteful number, since it uses less digits than its factorization.

221020102100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459561.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221020102100002 its reverse (200001201020122), we get a palindrome (421021303120124).

The spelling of 221020102100002 in words is "two hundred twenty-one trillion, twenty billion, one hundred two million, one hundred thousand, two".