1102001121221 has 32 divisors (see below), whose sum is σ = 1543940794368. Its totient is φ = 758185179840.

The previous prime is 1102001121181. The next prime is 1102001121229. The reversal of 1102001121221 is 1221211002011.

It is not a de Polignac number, because 1102001121221 - 2³⁴ = 1084821252037 is a prime.

It is a super-2 number, since 2×1102001121221² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1102001121196 and 1102001121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102001121229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23909591 + ... + 23955636.

It is an arithmetic number, because the mean of its divisors is an integer number (48248149824).

Almost surely, 2^{1102001121221} is an apocalyptic number.

1102001121221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1102001121221 is a deficient number, since it is larger than the sum of its proper divisors (441939673147).

1102001121221 is a wasteful number, since it uses less digits than its factorization.

1102001121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47865281.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1102001121221 its reverse (1221211002011), we get a palindrome (2323212123232).

The spelling of 1102001121221 in words is "one trillion, one hundred two billion, one million, one hundred twenty-one thousand, two hundred twenty-one".