1123213021099 has 16 divisors (see below), whose sum is σ = 1239282888480. Its totient is φ = 1011388343040.

The previous prime is 1123213021039. The next prime is 1123213021109. The reversal of 1123213021099 is 9901203123211.

It is a cyclic number.

It is not a de Polignac number, because 1123213021099 - 2³⁵ = 1088853282731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123213021039) 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, 3950184 + ... + 4224970.

It is an arithmetic number, because the mean of its divisors is an integer number (77455180530).

Almost surely, 2^{1123213021099} is an apocalyptic number.

1123213021099 is a deficient number, since it is larger than the sum of its proper divisors (116069867381).

1123213021099 is a wasteful number, since it uses less digits than its factorization.

1123213021099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282510.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 1123213021099 in words is "one trillion, one hundred twenty-three billion, two hundred thirteen million, twenty-one thousand, ninety-nine".