1121123300021 has 8 divisors (see below), whose sum is σ = 1187081173440. Its totient is φ = 1055166475968.

The previous prime is 1121123299991. The next prime is 1121123300051. The reversal of 1121123300021 is 1200033211211.

It is an interprime number because it is at equal distance from previous prime (1121123299991) and next prime (1121123300051).

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

It is a cyclic number.

It is not a de Polignac number, because 1121123300021 - 2¹⁸ = 1121123037877 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121123300051) 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, 3390950 + ... + 3706856.

It is an arithmetic number, because the mean of its divisors is an integer number (148385146680).

Almost surely, 2^{1121123300021} is an apocalyptic number.

It is an amenable number.

1121123300021 is a deficient number, since it is larger than the sum of its proper divisors (65957873419).

1121123300021 is a wasteful number, since it uses less digits than its factorization.

1121123300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524683.

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

Adding to 1121123300021 its reverse (1200033211211), we get a palindrome (2321156511232).

The spelling of 1121123300021 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, three hundred thousand, twenty-one".