1021214553 has 8 divisors (see below), whose sum is σ = 1362575328. Its totient is φ = 680331744.

The previous prime is 1021214521. The next prime is 1021214563. The reversal of 1021214553 is 3554121201.

It is a happy number.

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

It is not a de Polignac number, because 1021214553 - 2⁵ = 1021214521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021214563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114475 + ... + 123072.

It is an arithmetic number, because the mean of its divisors is an integer number (170321916).

Almost surely, 2^1021214553 is an apocalyptic number.

It is an amenable number.

1021214553 is a deficient number, since it is larger than the sum of its proper divisors (341360775).

1021214553 is a wasteful number, since it uses less digits than its factorization.

1021214553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238983.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1021214553 is about 31956.4477531530. The cubic root of 1021214553 is about 1007.0220924648.

Adding to 1021214553 its reverse (3554121201), we get a palindrome (4575335754).

The spelling of 1021214553 in words is "one billion, twenty-one million, two hundred fourteen thousand, five hundred fifty-three".