221002022012 has 12 divisors (see below), whose sum is σ = 391413220296. Its totient is φ = 109169673360.

The previous prime is 221002022009. The next prime is 221002022023. The reversal of 221002022012 is 210220200122.

It is a congruent number.

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, 332834039 + ... + 332834702.

It is an arithmetic number, because the mean of its divisors is an integer number (32617768358).

Almost surely, 2^221002022012 is an apocalyptic number.

It is an amenable number.

221002022012 is a deficient number, since it is larger than the sum of its proper divisors (170411198284).

221002022012 is a wasteful number, since it uses less digits than its factorization.

221002022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665668828 (or 665668826 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221002022012 its reverse (210220200122), we get a palindrome (431222222134).

The spelling of 221002022012 in words is "two hundred twenty-one billion, two million, twenty-two thousand, twelve".