1101220376257 has 4 divisors (see below), whose sum is σ = 1101222661680. Its totient is φ = 1101218090836.

The previous prime is 1101220376251. The next prime is 1101220376261. The reversal of 1101220376257 is 7526730221011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101220376257 is a prime.

It is a super-4 number, since 4×1101220376257⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101220376251) 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, 107083 + ... + 1487920.

It is an arithmetic number, because the mean of its divisors is an integer number (275305665420).

Almost surely, 2^{1101220376257} is an apocalyptic number.

It is an amenable number.

1101220376257 is a deficient number, since it is larger than the sum of its proper divisors (2285423).

1101220376257 is an equidigital number, since it uses as much as digits as its factorization.

1101220376257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285422.

The product of its (nonzero) digits is 35280, while the sum is 37.

Adding to 1101220376257 its reverse (7526730221011), we get a palindrome (8627950597268).

The spelling of 1101220376257 in words is "one trillion, one hundred one billion, two hundred twenty million, three hundred seventy-six thousand, two hundred fifty-seven".