1101200020021 has 16 divisors (see below), whose sum is σ = 1162041753600. Its totient is φ = 1042129882800.

The previous prime is 1101200020009. The next prime is 1101200020079. The reversal of 1101200020021 is 1200200021011.

It is a cyclic number.

It is not a de Polignac number, because 1101200020021 - 2⁷ = 1101200019893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101200020091) 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, 1226781 + ... + 1925458.

It is an arithmetic number, because the mean of its divisors is an integer number (72627609600).

Almost surely, 2^{1101200020021} is an apocalyptic number.

It is an amenable number.

1101200020021 is a deficient number, since it is larger than the sum of its proper divisors (60841733579).

1101200020021 is a wasteful number, since it uses less digits than its factorization.

1101200020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152520.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1101200020021 its reverse (1200200021011), we get a palindrome (2301400041032).

The spelling of 1101200020021 in words is "one trillion, one hundred one billion, two hundred million, twenty thousand, twenty-one".