1100020011021 has 6 divisors (see below), whose sum is σ = 1588917793710. Its totient is φ = 733346674008.

The previous prime is 1100020010981. The next prime is 1100020011029. The reversal of 1100020011021 is 1201100200011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 619612994025 + 480407016996 = 787155^2 + 693114^2 .

It is not a de Polignac number, because 1100020011021 - 2³¹ = 1097872527373 is a prime.

It is a super-2 number, since 2×1100020011021² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 122224445669 = 1100020011021 / (1 + 1 + 0 + 0 + 0 + 2 + 0 + 0 + 1 + 1 + 0 + 2 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1100020010994 and 1100020011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100020011029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61112222826 + ... + 61112222843.

It is an arithmetic number, because the mean of its divisors is an integer number (264819632285).

Almost surely, 2^{1100020011021} is an apocalyptic number.

It is an amenable number.

1100020011021 is a deficient number, since it is larger than the sum of its proper divisors (488897782689).

1100020011021 is a wasteful number, since it uses less digits than its factorization.

1100020011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122224445675 (or 122224445672 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1100020011021 its reverse (1201100200011), we get a palindrome (2301120211032).

The spelling of 1100020011021 in words is "one trillion, one hundred billion, twenty million, eleven thousand, twenty-one".