981221222001022 has 32 divisors (see below), whose sum is σ = 1557477364584960. Its totient is φ = 462663750927840.

The previous prime is 981221222001017. The next prime is 981221222001061. The reversal of 981221222001022 is 220100222122189.

It is a happy number.

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, 238695613 + ... + 242771575.

It is an arithmetic number, because the mean of its divisors is an integer number (48671167643280).

Almost surely, 2^{981221222001022} is an apocalyptic number.

981221222001022 is a deficient number, since it is larger than the sum of its proper divisors (576256142583938).

981221222001022 is a wasteful number, since it uses less digits than its factorization.

981221222001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149768.

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 981221222001022 in words is "nine hundred eighty-one trillion, two hundred twenty-one billion, two hundred twenty-two million, one thousand, twenty-two".