1221022220119 has 24 divisors (see below), whose sum is σ = 1354754896992. Its totient is φ = 1099335444480.

The previous prime is 1221022220113. The next prime is 1221022220161. The reversal of 1221022220119 is 9110222201221.

It is a happy number.

It is not a de Polignac number, because 1221022220119 - 2³ = 1221022220111 is a prime.

It is a super-2 number, since 2×1221022220119² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221022220093 and 1221022220102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221022220111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31251054 + ... + 31290100.

It is an arithmetic number, because the mean of its divisors is an integer number (56448120708).

Almost surely, 2^{1221022220119} is an apocalyptic number.

1221022220119 is a deficient number, since it is larger than the sum of its proper divisors (133732676873).

1221022220119 is a wasteful number, since it uses less digits than its factorization.

1221022220119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43627 (or 43614 counting only the distinct ones).

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

The spelling of 1221022220119 in words is "one trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty thousand, one hundred nineteen".