2221121020022 has 16 divisors (see below), whose sum is σ = 3504044852352. Its totient is φ = 1054457938560.

The previous prime is 2221121019989. The next prime is 2221121020037. The reversal of 2221121020022 is 2200201211222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337964003 + ... + 337970574.

It is an arithmetic number, because the mean of its divisors is an integer number (219002803272).

Almost surely, 2^{2221121020022} is an apocalyptic number.

2221121020022 is a deficient number, since it is larger than the sum of its proper divisors (1282923832330).

2221121020022 is a wasteful number, since it uses less digits than its factorization.

2221121020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675934663.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2221121020022 its reverse (2200201211222), we get a palindrome (4421322231244).

The spelling of 2221121020022 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, twenty thousand, twenty-two".