2221111221022 has 4 divisors (see below), whose sum is σ = 3331666831536. Its totient is φ = 1110555610510.

The previous prime is 2221111220981. The next prime is 2221111221023. The reversal of 2221111221022 is 2201221111222.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2221111221022² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221111221023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555277805254 + ... + 555277805257.

It is an arithmetic number, because the mean of its divisors is an integer number (832916707884).

Almost surely, 2^{2221111221022} is an apocalyptic number.

2221111221022 is a deficient number, since it is larger than the sum of its proper divisors (1110555610514).

2221111221022 is a wasteful number, since it uses less digits than its factorization.

2221111221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110555610513.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2221111221022 its reverse (2201221111222), we get a palindrome (4422332332244).

The spelling of 2221111221022 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, two hundred twenty-one thousand, twenty-two".