1891112022202 has 8 divisors (see below), whose sum is σ = 3054873266676. Its totient is φ = 872820933312.

The previous prime is 1891112022197. The next prime is 1891112022253. The reversal of 1891112022202 is 2022202111981.

It can be written as a sum of positive squares in 2 ways, for example, as 1397452615321 + 493659406881 = 1182139^2 + 702609^2 .

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

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, 36367538863 + ... + 36367538914.

Almost surely, 2^{1891112022202} is an apocalyptic number.

1891112022202 is a deficient number, since it is larger than the sum of its proper divisors (1163761244474).

1891112022202 is a wasteful number, since it uses less digits than its factorization.

1891112022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72735077792.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 1891112022202 in words is "one trillion, eight hundred ninety-one billion, one hundred twelve million, twenty-two thousand, two hundred two".