1211112030023 has 16 divisors (see below), whose sum is σ = 1465577686080. Its totient is φ = 977011316736.

The previous prime is 1211112029983. The next prime is 1211112030067. The reversal of 1211112030023 is 3200302111121.

It is not a de Polignac number, because 1211112030023 - 2²⁸ = 1210843594567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211112029983 and 1211112030010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211112020023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8841923 + ... + 8977851.

It is an arithmetic number, because the mean of its divisors is an integer number (91598605380).

Almost surely, 2^{1211112030023} is an apocalyptic number.

1211112030023 is a deficient number, since it is larger than the sum of its proper divisors (254465656057).

1211112030023 is a wasteful number, since it uses less digits than its factorization.

1211112030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210826.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1211112030023 its reverse (3200302111121), we get a palindrome (4411414141144).

The spelling of 1211112030023 in words is "one trillion, two hundred eleven billion, one hundred twelve million, thirty thousand, twenty-three".