1102001201021 has 6 divisors (see below), whose sum is σ = 1281919764510. Its totient is φ = 944572457976.

The previous prime is 1102001201017. The next prime is 1102001201027. The reversal of 1102001201021 is 1201021002011.

It can be written as a sum of positive squares in only one way, i.e., 944482704025 + 157518496996 = 971845^2 + 396886^2 .

It is not a de Polignac number, because 1102001201021 - 2² = 1102001201017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1102001200993 and 1102001201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102001201027) 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, 11244910166 + ... + 11244910263.

It is an arithmetic number, because the mean of its divisors is an integer number (213653294085).

Almost surely, 2^{1102001201021} is an apocalyptic number.

It is an amenable number.

1102001201021 is a deficient number, since it is larger than the sum of its proper divisors (179918563489).

1102001201021 is an equidigital number, since it uses as much as digits as its factorization.

1102001201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22489820443 (or 22489820436 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1102001201021 its reverse (1201021002011), we get a palindrome (2303022203032).

The spelling of 1102001201021 in words is "one trillion, one hundred two billion, one million, two hundred one thousand, twenty-one".