221211021100202 has 48 divisors (see below), whose sum is σ = 389417134464000. Its totient is φ = 93963178737792.

The previous prime is 221211021100127. The next prime is 221211021100211. The reversal of 221211021100202 is 202001120112122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 437159063 + ... + 437664789.

It is an arithmetic number, because the mean of its divisors is an integer number (8112856968000).

Almost surely, 2^{221211021100202} is an apocalyptic number.

221211021100202 is a deficient number, since it is larger than the sum of its proper divisors (168206113363798).

221211021100202 is a wasteful number, since it uses less digits than its factorization.

221211021100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545355 (or 545348 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221211021100202 its reverse (202001120112122), we get a palindrome (423212141212324).

The spelling of 221211021100202 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty-one million, one hundred thousand, two hundred two".