1022220021121 has 8 divisors (see below), whose sum is σ = 1136363696384. Its totient is φ = 913149398160.

The previous prime is 1022220021113. The next prime is 1022220021131. The reversal of 1022220021121 is 1211200222201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022220021121 - 2³ = 1022220021113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022220021095 and 1022220021104.

It is not an unprimeable number, because it can be changed into a prime (1022220021131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268262651 + ... + 1268263456.

It is an arithmetic number, because the mean of its divisors is an integer number (142045462048).

Almost surely, 2^{1022220021121} is an apocalyptic number.

It is an amenable number.

1022220021121 is a deficient number, since it is larger than the sum of its proper divisors (114143675263).

1022220021121 is a wasteful number, since it uses less digits than its factorization.

1022220021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536526151.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1022220021121 its reverse (1211200222201), we get a palindrome (2233420243322).

The spelling of 1022220021121 in words is "one trillion, twenty-two billion, two hundred twenty million, twenty-one thousand, one hundred twenty-one".