1222021401213 has 16 divisors (see below), whose sum is σ = 1644646130496. Its totient is φ = 807039327360.

The previous prime is 1222021401191. The next prime is 1222021401217. The reversal of 1222021401213 is 3121041202221.

It is a happy number.

It is not a de Polignac number, because 1222021401213 - 2⁹ = 1222021400701 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222021401213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222021401217) 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, 13932945 + ... + 14020377.

It is an arithmetic number, because the mean of its divisors is an integer number (102790383156).

Almost surely, 2^{1222021401213} is an apocalyptic number.

It is an amenable number.

1222021401213 is a deficient number, since it is larger than the sum of its proper divisors (422624729283).

1222021401213 is a wasteful number, since it uses less digits than its factorization.

1222021401213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131084.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1222021401213 its reverse (3121041202221), we get a palindrome (4343062603434).

The spelling of 1222021401213 in words is "one trillion, two hundred twenty-two billion, twenty-one million, four hundred one thousand, two hundred thirteen".