1021021220112 has 40 divisors (see below), whose sum is σ = 2640016682880. Its totient is φ = 340033499520.

The previous prime is 1021021220081. The next prime is 1021021220171. The reversal of 1021021220112 is 2110221201201.

It is a junction number, because it is equal to n+sod(n) for n = 1021021220091 and 1021021220100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9537064 + ... + 9643527.

It is an arithmetic number, because the mean of its divisors is an integer number (66000417072).

Almost surely, 2^{1021021220112} is an apocalyptic number.

1021021220112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021021220112 is an abundant number, since it is smaller than the sum of its proper divisors (1618995462768).

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

1021021220112 is a wasteful number, since it uses less digits than its factorization.

1021021220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19181711 (or 19181705 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021021220112 its reverse (2110221201201), we get a palindrome (3131242421313).

The spelling of 1021021220112 in words is "one trillion, twenty-one billion, twenty-one million, two hundred twenty thousand, one hundred twelve".