2221020012122 has 16 divisors (see below), whose sum is σ = 3378370285800. Its totient is φ = 1095005388288.

The previous prime is 2221020012091. The next prime is 2221020012131. The reversal of 2221020012122 is 2212100201222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1880000219161 + 341019792961 = 1371131^2 + 583969^2 .

It is a super-3 number, since 3×2221020012122³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221020012122.

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, 27160223 + ... + 27241874.

Almost surely, 2^{2221020012122} is an apocalyptic number.

2221020012122 is a deficient number, since it is larger than the sum of its proper divisors (1157350273678).

2221020012122 is a wasteful number, since it uses less digits than its factorization.

2221020012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54402385.

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

Adding to 2221020012122 its reverse (2212100201222), we get a palindrome (4433120213344).

The spelling of 2221020012122 in words is "two trillion, two hundred twenty-one billion, twenty million, twelve thousand, one hundred twenty-two".