1021220211012 has 96 divisors (see below), whose sum is σ = 2542316765184. Its totient is φ = 318531820800.

The previous prime is 1021220210999. The next prime is 1021220211017. The reversal of 1021220211012 is 2101120221201.

It is a junction number, because it is equal to n+sod(n) for n = 1021220210982 and 1021220211000.

It is not an unprimeable number, because it can be changed into a prime (1021220211017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1099312 + ... + 1803032.

It is an arithmetic number, because the mean of its divisors is an integer number (26482466304).

Almost surely, 2^{1021220211012} is an apocalyptic number.

1021220211012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021220211012 is an abundant number, since it is smaller than the sum of its proper divisors (1521096554172).

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

1021220211012 is a wasteful number, since it uses less digits than its factorization.

1021220211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703889 (or 703887 counting only the distinct ones).

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

Adding to 1021220211012 its reverse (2101120221201), we get a palindrome (3122340432213).

The spelling of 1021220211012 in words is "one trillion, twenty-one billion, two hundred twenty million, two hundred eleven thousand, twelve".