21110220021099 has 8 divisors (see below), whose sum is σ = 30705774576192. Its totient is φ = 12794072740040.

The previous prime is 21110220021091. The next prime is 21110220021113. The reversal of 21110220021099 is 99012002201112.

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 21110220021099 - 2³ = 21110220021091 is a prime.

It is a super-3 number, since 3×21110220021099³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21110220021091) 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, 319851818469 + ... + 319851818534.

It is an arithmetic number, because the mean of its divisors is an integer number (3838221822024).

Almost surely, 2^{21110220021099} is an apocalyptic number.

21110220021099 is a deficient number, since it is larger than the sum of its proper divisors (9595554555093).

21110220021099 is a wasteful number, since it uses less digits than its factorization.

21110220021099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639703637017.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 21110220021099 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty million, twenty-one thousand, ninety-nine".