1021220110212 has 12 divisors (see below), whose sum is σ = 2382846923856. Its totient is φ = 340406703400.

The previous prime is 1021220110189. The next prime is 1021220110249. The reversal of 1021220110212 is 2120110221201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1021220110191 and 1021220110200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42550837914 + ... + 42550837937.

It is an arithmetic number, because the mean of its divisors is an integer number (198570576988).

Almost surely, 2^{1021220110212} is an apocalyptic number.

1021220110212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021220110212 is an abundant number, since it is smaller than the sum of its proper divisors (1361626813644).

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

1021220110212 is a wasteful number, since it uses less digits than its factorization.

1021220110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85101675858 (or 85101675856 counting only the distinct ones).

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

Adding to 1021220110212 its reverse (2120110221201), we get a palindrome (3141330331413).

The spelling of 1021220110212 in words is "one trillion, twenty-one billion, two hundred twenty million, one hundred ten thousand, two hundred twelve".