1121002100023 has 16 divisors (see below), whose sum is σ = 1231983849600. Its totient is φ = 1013746454784.

The previous prime is 1121002099991. The next prime is 1121002100039. The reversal of 1121002100023 is 3200012001211.

It is a cyclic number.

It is not a de Polignac number, because 1121002100023 - 2⁵ = 1121002099991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121002099976 and 1121002100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121002100063) 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, 3822511 + ... + 4105312.

It is an arithmetic number, because the mean of its divisors is an integer number (76998990600).

Almost surely, 2^{1121002100023} is an apocalyptic number.

1121002100023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1121002100023 is a deficient number, since it is larger than the sum of its proper divisors (110981749577).

1121002100023 is a wasteful number, since it uses less digits than its factorization.

1121002100023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928058.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1121002100023 its reverse (3200012001211), we get a palindrome (4321014101234).

It can be divided in two parts, 1121002 and 100023, that added together give a square (1221025 = 1105²).

The spelling of 1121002100023 in words is "one trillion, one hundred twenty-one billion, two million, one hundred thousand, twenty-three".