1110021421 has 8 divisors (see below), whose sum is σ = 1121541824. Its totient is φ = 1098515520.

The previous prime is 1110021391. The next prime is 1110021431. The reversal of 1110021421 is 1241200111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1110021421 - 2⁹ = 1110020909 is a prime.

It is a super-3 number, since 3×1110021421³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110021431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220090 + ... + 225076.

It is an arithmetic number, because the mean of its divisors is an integer number (140192728).

Almost surely, 2^1110021421 is an apocalyptic number.

It is an amenable number.

1110021421 is a deficient number, since it is larger than the sum of its proper divisors (11520403).

1110021421 is a wasteful number, since it uses less digits than its factorization.

1110021421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7251.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1110021421 is about 33316.9839721425. The cubic root of 1110021421 is about 1035.4054658493.

Adding to 1110021421 its reverse (1241200111), we get a palindrome (2351221532).

The spelling of 1110021421 in words is "one billion, one hundred ten million, twenty-one thousand, four hundred twenty-one".