221121022221002 has 8 divisors (see below), whose sum is σ = 336353104223712. Its totient is φ = 109003320813100.

The previous prime is 221121022220999. The next prime is 221121022221137. The reversal of 221121022221002 is 200122220121122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778595148524 + ... + 778595148807.

It is an arithmetic number, because the mean of its divisors is an integer number (42044138027964).

Almost surely, 2^{221121022221002} is an apocalyptic number.

221121022221002 is a deficient number, since it is larger than the sum of its proper divisors (115232082002710).

221121022221002 is a wasteful number, since it uses less digits than its factorization.

221121022221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557190297404.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221121022221002 its reverse (200122220121122), we get a palindrome (421243242342124).

The spelling of 221121022221002 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twenty-two million, two hundred twenty-one thousand, two".