1021220221112 has 64 divisors (see below), whose sum is σ = 2378687109120. Its totient is φ = 400223484288.

The previous prime is 1021220221103. The next prime is 1021220221169. The reversal of 1021220221112 is 2111220221201.

It is a super-3 number, since 3×1021220221112³ (a number of 37 digits) contains 333 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, 6477128 + ... + 6632919.

It is an arithmetic number, because the mean of its divisors is an integer number (37166986080).

Almost surely, 2^{1021220221112} is an apocalyptic number.

It is an amenable number.

1021220221112 is an abundant number, since it is smaller than the sum of its proper divisors (1357466888008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021220221112 is a wasteful number, since it uses less digits than its factorization.

1021220221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13110180 (or 13110176 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021220221112 its reverse (2111220221201), we get a palindrome (3132440442313).

The spelling of 1021220221112 in words is "one trillion, twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twelve".