1021113121194 has 12 divisors (see below), whose sum is σ = 2212411762626. Its totient is φ = 340371040392.

The previous prime is 1021113121181. The next prime is 1021113121199. The reversal of 1021113121194 is 4911213111201.

It can be written as a sum of positive squares in only one way, i.e., 619074696969 + 402038424225 = 786813^2 + 634065^2 .

It is not an unprimeable number, because it can be changed into a prime (1021113121199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28364253349 + ... + 28364253384.

Almost surely, 2^{1021113121194} is an apocalyptic number.

1021113121194 is an abundant number, since it is smaller than the sum of its proper divisors (1191298641432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021113121194 is a wasteful number, since it uses less digits than its factorization.

1021113121194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56728506741 (or 56728506738 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

Adding to 1021113121194 its reverse (4911213111201), we get a palindrome (5932326232395).

The spelling of 1021113121194 in words is "one trillion, twenty-one billion, one hundred thirteen million, one hundred twenty-one thousand, one hundred ninety-four".