1222101021213 has 12 divisors (see below), whose sum is σ = 1765267586940. Its totient is φ = 814729142016.

The previous prime is 1222101021131. The next prime is 1222101021217. The reversal of 1222101021213 is 3121201012221.

It can be written as a sum of positive squares in 2 ways, for example, as 661583770884 + 560517250329 = 813378^2 + 748677^2 .

It is not a de Polignac number, because 1222101021213 - 2⁸ = 1222101020957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222101021217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1831743 + ... + 2408211.

It is an arithmetic number, because the mean of its divisors is an integer number (147105632245).

Almost surely, 2^{1222101021213} is an apocalyptic number.

It is an amenable number.

1222101021213 is a deficient number, since it is larger than the sum of its proper divisors (543166565727).

1222101021213 is a wasteful number, since it uses less digits than its factorization.

1222101021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812028 (or 812025 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1222101021213 its reverse (3121201012221), we get a palindrome (4343302033434).

The spelling of 1222101021213 in words is "one trillion, two hundred twenty-two billion, one hundred one million, twenty-one thousand, two hundred thirteen".