221021111012002 has 16 divisors (see below), whose sum is σ = 382644752306112. Its totient is φ = 93785478505200.

The previous prime is 221021111011999. The next prime is 221021111012059. The reversal of 221021111012002 is 200210111120122.

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, 78154564008 + ... + 78154566835.

It is an arithmetic number, because the mean of its divisors is an integer number (23915297019132).

Almost surely, 2^{221021111012002} is an apocalyptic number.

221021111012002 is a deficient number, since it is larger than the sum of its proper divisors (161623641294110).

221021111012002 is a wasteful number, since it uses less digits than its factorization.

221021111012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156309130953.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221021111012002 its reverse (200210111120122), we get a palindrome (421231222132124).

The spelling of 221021111012002 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred eleven million, twelve thousand, two".