2021222112004 has 6 divisors (see below), whose sum is σ = 3537138696014. Its totient is φ = 1010611056000.

The previous prime is 2021222111977. The next prime is 2021222112031. The reversal of 2021222112004 is 4002112221202.

It is an interprime number because it is at equal distance from previous prime (2021222111977) and next prime (2021222112031).

It can be written as a sum of positive squares in only one way, i.e., 1787355086400 + 233867025604 = 1336920^2 + 483598^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252652763997 + ... + 252652764004.

Almost surely, 2^{2021222112004} is an apocalyptic number.

It is an amenable number.

2021222112004 is a deficient number, since it is larger than the sum of its proper divisors (1515916584010).

2021222112004 is a wasteful number, since it uses less digits than its factorization.

2021222112004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505305528005 (or 505305528003 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2021222112004 its reverse (4002112221202), we get a palindrome (6023334333206).

The spelling of 2021222112004 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, four".