1101214421 has 4 divisors (see below), whose sum is σ = 1102851372. Its totient is φ = 1099577472.

The previous prime is 1101214403. The next prime is 1101214451. The reversal of 1101214421 is 1244121011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 322023025 + 779191396 = 17945^2 + 27914^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101214421 - 2²² = 1097020117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101214421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101214451) 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, 817466 + ... + 818811.

It is an arithmetic number, because the mean of its divisors is an integer number (275712843).

Almost surely, 2^1101214421 is an apocalyptic number.

It is an amenable number.

1101214421 is a deficient number, since it is larger than the sum of its proper divisors (1636951).

1101214421 is an equidigital number, since it uses as much as digits as its factorization.

1101214421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636950.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1101214421 is about 33184.5509386522. The cubic root of 1101214421 is about 1032.6598613933.

Adding to 1101214421 its reverse (1244121011), we get a palindrome (2345335432).

The spelling of 1101214421 in words is "one billion, one hundred one million, two hundred fourteen thousand, four hundred twenty-one".