11211571023 has 8 divisors (see below), whose sum is σ = 14974671408. Its totient is φ = 7461425664.

The previous prime is 11211571003. The next prime is 11211571039. The reversal of 11211571023 is 32017511211.

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

It is not a de Polignac number, because 11211571023 - 2⁸ = 11211570767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11211570984 and 11211571002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211571003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3236736 + ... + 3240197.

It is an arithmetic number, because the mean of its divisors is an integer number (1871833926).

Almost surely, 2^11211571023 is an apocalyptic number.

11211571023 is a deficient number, since it is larger than the sum of its proper divisors (3763100385).

11211571023 is an equidigital number, since it uses as much as digits as its factorization.

11211571023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477513.

The product of its (nonzero) digits is 420, while the sum is 24.

The spelling of 11211571023 in words is "eleven billion, two hundred eleven million, five hundred seventy-one thousand, twenty-three".