1214021345 has 24 divisors (see below), whose sum is σ = 1523985216. Its totient is φ = 928291392.

The previous prime is 1214021311. The next prime is 1214021371. The reversal of 1214021345 is 5431204121.

It is not a de Polignac number, because 1214021345 - 2¹⁰ = 1214020321 is a prime.

It is a super-2 number, since 2×1214021345² = 2947695652231218050, which contains 22 as substring.

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 1214021345.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431714 + ... + 434516.

It is an arithmetic number, because the mean of its divisors is an integer number (63499384).

Almost surely, 2^1214021345 is an apocalyptic number.

It is an amenable number.

1214021345 is a deficient number, since it is larger than the sum of its proper divisors (309963871).

1214021345 is a wasteful number, since it uses less digits than its factorization.

1214021345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969 (or 2940 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1214021345 is about 34842.8090859506. The cubic root of 1214021345 is about 1066.7814146845.

Adding to 1214021345 its reverse (5431204121), we get a palindrome (6645225466).

The spelling of 1214021345 in words is "one billion, two hundred fourteen million, twenty-one thousand, three hundred forty-five".