1901221102222 has 32 divisors (see below), whose sum is σ = 3235339245600. Its totient is φ = 830661931008.

The previous prime is 1901221102217. The next prime is 1901221102247. The reversal of 1901221102222 is 2222011221091.

It is a happy number.

It is a super-2 number, since 2×1901221102222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 842947 + ... + 2124382.

It is an arithmetic number, because the mean of its divisors is an integer number (101104351425).

Almost surely, 2^{1901221102222} is an apocalyptic number.

1901221102222 is a deficient number, since it is larger than the sum of its proper divisors (1334118143378).

1901221102222 is a wasteful number, since it uses less digits than its factorization.

1901221102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968660.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 1901221102222 in words is "one trillion, nine hundred one billion, two hundred twenty-one million, one hundred two thousand, two hundred twenty-two".