1020221101012 has 24 divisors (see below), whose sum is σ = 1818827730720. Its totient is φ = 500586321120.

The previous prime is 1020221101001. The next prime is 1020221101019. The reversal of 1020221101012 is 2101011220201.

It is a junction number, because it is equal to n+sod(n) for n = 1020221100983 and 1020221101001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020221101019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3650683 + ... + 3920194.

It is an arithmetic number, because the mean of its divisors is an integer number (75784488780).

Almost surely, 2^{1020221101012} is an apocalyptic number.

It is an amenable number.

1020221101012 is a deficient number, since it is larger than the sum of its proper divisors (798606629708).

1020221101012 is a wasteful number, since it uses less digits than its factorization.

1020221101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571511 (or 7571509 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020221101012 its reverse (2101011220201), we get a palindrome (3121232321213).

The spelling of 1020221101012 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred one thousand, twelve".