1021220022112 has 24 divisors (see below), whose sum is σ = 2048461392096. Its totient is φ = 500975859072.

The previous prime is 1021220022101. The next prime is 1021220022113. The reversal of 1021220022112 is 2112200221201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021220022113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301065528 + ... + 301068919.

It is an arithmetic number, because the mean of its divisors is an integer number (85352558004).

Almost surely, 2^{1021220022112} is an apocalyptic number.

It is an amenable number.

1021220022112 is an abundant number, since it is smaller than the sum of its proper divisors (1027241369984).

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

1021220022112 is an equidigital number, since it uses as much as digits as its factorization.

1021220022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602134510 (or 602134502 counting only the distinct ones).

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

Adding to 1021220022112 its reverse (2112200221201), we get a palindrome (3133420243313).

The spelling of 1021220022112 in words is "one trillion, twenty-one billion, two hundred twenty million, twenty-two thousand, one hundred twelve".