1100012002421 has 2 divisors, whose sum is σ = 1100012002422. Its totient is φ = 1100012002420.

The previous prime is 1100012002417. The next prime is 1100012002429. The reversal of 1100012002421 is 1242002100011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779537131396 + 320474871025 = 882914^2 + 566105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100012002421 - 2² = 1100012002417 is a prime.

It is a super-2 number, since 2×1100012002421² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1100012002396 and 1100012002405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100012002429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550006001210 + 550006001211.

It is an arithmetic number, because the mean of its divisors is an integer number (550006001211).

Almost surely, 2^{1100012002421} is an apocalyptic number.

It is an amenable number.

1100012002421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100012002421 is an equidigital number, since it uses as much as digits as its factorization.

1100012002421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1100012002421 its reverse (1242002100011), we get a palindrome (2342014102432).

The spelling of 1100012002421 in words is "one trillion, one hundred billion, twelve million, two thousand, four hundred twenty-one".