1102201421 has 4 divisors (see below), whose sum is σ = 1104896700. Its totient is φ = 1099506144.

The previous prime is 1102201417. The next prime is 1102201433. The reversal of 1102201421 is 1241022011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1241022011 = 43 ⋅28860977.

It can be written as a sum of positive squares in 2 ways, for example, as 883575625 + 218625796 = 29725^2 + 14786^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102201421 - 2² = 1102201417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102201396 and 1102201405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102201411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347026 + ... + 1347843.

It is an arithmetic number, because the mean of its divisors is an integer number (276224175).

Almost surely, 2^1102201421 is an apocalyptic number.

It is an amenable number.

1102201421 is a deficient number, since it is larger than the sum of its proper divisors (2695279).

1102201421 is an equidigital number, since it uses as much as digits as its factorization.

1102201421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695278.

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

The square root of 1102201421 is about 33199.4189858799. The cubic root of 1102201421 is about 1032.9682878321.

Adding to 1102201421 its reverse (1241022011), we get a palindrome (2343223432).

The spelling of 1102201421 in words is "one billion, one hundred two million, two hundred one thousand, four hundred twenty-one".