1020138362111 has 4 divisors (see below), whose sum is σ = 1112878213224. Its totient is φ = 927398511000.

The previous prime is 1020138362093. The next prime is 1020138362137. The reversal of 1020138362111 is 1112638310201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020138362111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020138362141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46369925540 + ... + 46369925561.

It is an arithmetic number, because the mean of its divisors is an integer number (278219553306).

Almost surely, 2^{1020138362111} is an apocalyptic number.

1020138362111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1020138362111 is a deficient number, since it is larger than the sum of its proper divisors (92739851113).

1020138362111 is an equidigital number, since it uses as much as digits as its factorization.

1020138362111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92739851112.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 1020138362111 in words is "one trillion, twenty billion, one hundred thirty-eight million, three hundred sixty-two thousand, one hundred eleven".