2221002158638 has 8 divisors (see below), whose sum is σ = 3334025197440. Its totient is φ = 1109660426160.

The previous prime is 2221002158611. The next prime is 2221002158647. The reversal of 2221002158638 is 8368512001222.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2221002158638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420323278 + ... + 420328561.

It is an arithmetic number, because the mean of its divisors is an integer number (416753149680).

Almost surely, 2^{2221002158638} is an apocalyptic number.

2221002158638 is a deficient number, since it is larger than the sum of its proper divisors (1113023038802).

2221002158638 is a wasteful number, since it uses less digits than its factorization.

2221002158638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840653162.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 2221002158638 in words is "two trillion, two hundred twenty-one billion, two million, one hundred fifty-eight thousand, six hundred thirty-eight".