1022221111121 has 24 divisors (see below), whose sum is σ = 1226205377280. Its totient is φ = 849221295552.

The previous prime is 1022221111111. The next prime is 1022221111139. The reversal of 1022221111121 is 1211111222201.

It is not a de Polignac number, because 1022221111121 - 2²² = 1022216916817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022221111121.

It is not an unprimeable number, because it can be changed into a prime (1022221111111) 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, 1917476 + ... + 2391893.

It is an arithmetic number, because the mean of its divisors is an integer number (51091890720).

Almost surely, 2^{1022221111121} is an apocalyptic number.

It is an amenable number.

1022221111121 is a deficient number, since it is larger than the sum of its proper divisors (203984266159).

1022221111121 is a wasteful number, since it uses less digits than its factorization.

1022221111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309533 (or 4309526 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1022221111121 its reverse (1211111222201), we get a palindrome (2233332333322).

The spelling of 1022221111121 in words is "one trillion, twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twenty-one".