221121002101210 has 16 divisors (see below), whose sum is σ = 398029887856800. Its totient is φ = 88445715490576.

The previous prime is 221121002101177. The next prime is 221121002101253. The reversal of 221121002101210 is 12101200121122.

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, 335322880 + ... + 335981659.

It is an arithmetic number, because the mean of its divisors is an integer number (24876867991050).

Almost surely, 2^{221121002101210} is an apocalyptic number.

221121002101210 is a deficient number, since it is larger than the sum of its proper divisors (176908885755590).

221121002101210 is a wasteful number, since it uses less digits than its factorization.

221121002101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671337485.

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

Adding to 221121002101210 its reverse (12101200121122), we get a palindrome (233222202222332).

The spelling of 221121002101210 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two million, one hundred one thousand, two hundred ten".