1000022201221 has 8 divisors (see below), whose sum is σ = 1006361561088. Its totient is φ = 993694338000.

The previous prime is 1000022201203. The next prime is 1000022201237. The reversal of 1000022201221 is 1221022200001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000022201221 - 2⁷ = 1000022201093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000022201281) 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, 2699610 + ... + 3047611.

It is an arithmetic number, because the mean of its divisors is an integer number (125795195136).

Almost surely, 2^{1000022201221} is an apocalyptic number.

It is an amenable number.

1000022201221 is a deficient number, since it is larger than the sum of its proper divisors (6339359867).

1000022201221 is an equidigital number, since it uses as much as digits as its factorization.

1000022201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748323.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1000022201221 its reverse (1221022200001), we get a palindrome (2221044401222).

The spelling of 1000022201221 in words is "one trillion, twenty-two million, two hundred one thousand, two hundred twenty-one".