1012101021221 has 16 divisors (see below), whose sum is σ = 1069999047936. Its totient is φ = 955424971776.

The previous prime is 1012101021203. The next prime is 1012101021227. The reversal of 1012101021221 is 1221201012101.

It is a cyclic number.

It is not a de Polignac number, because 1012101021221 - 2⁶ = 1012101021157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012101021196 and 1012101021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012101021227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34940 + ... + 1423173.

It is an arithmetic number, because the mean of its divisors is an integer number (66874940496).

Almost surely, 2^{1012101021221} is an apocalyptic number.

It is an amenable number.

1012101021221 is a deficient number, since it is larger than the sum of its proper divisors (57898026715).

1012101021221 is a wasteful number, since it uses less digits than its factorization.

1012101021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458532.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012101021221 its reverse (1221201012101), we get a palindrome (2233302033322).

The spelling of 1012101021221 in words is "one trillion, twelve billion, one hundred one million, twenty-one thousand, two hundred twenty-one".