1011211120023 has 16 divisors (see below), whose sum is σ = 1452586074240. Its totient is φ = 622030643424.

The previous prime is 1011211119959. The next prime is 1011211120061. The reversal of 1011211120023 is 3200211121101.

It is not a de Polignac number, because 1011211120023 - 2⁶ = 1011211119959 is a prime.

It is a super-2 number, since 2×1011211120023² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011211119984 and 1011211120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011211120123) 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, 5176261 + ... + 5368062.

It is an arithmetic number, because the mean of its divisors is an integer number (90786629640).

Almost surely, 2^{1011211120023} is an apocalyptic number.

1011211120023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1011211120023 is a deficient number, since it is larger than the sum of its proper divisors (441374954217).

1011211120023 is a wasteful number, since it uses less digits than its factorization.

1011211120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10546798.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1011211120023 its reverse (3200211121101), we get a palindrome (4211422241124).

The spelling of 1011211120023 in words is "one trillion, eleven billion, two hundred eleven million, one hundred twenty thousand, twenty-three".