1214299521 has 6 divisors (see below), whose sum is σ = 1753988210. Its totient is φ = 809533008.

The previous prime is 1214299517. The next prime is 1214299561. The reversal of 1214299521 is 1259924121.

1214299521 is a `hidden beast` number, since 1 + 2 + 1 + 42 + 99 + 521 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1172309121 + 41990400 = 34239^2 + 6480^2 .

It is not a de Polignac number, because 1214299521 - 2² = 1214299517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214299561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67461076 + ... + 67461093.

Almost surely, 2^1214299521 is an apocalyptic number.

It is an amenable number.

1214299521 is a deficient number, since it is larger than the sum of its proper divisors (539688689).

1214299521 is a wasteful number, since it uses less digits than its factorization.

1214299521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134922175 (or 134922172 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1214299521 is about 34846.8007283309. The cubic root of 1214299521 is about 1066.8628878056.

The spelling of 1214299521 in words is "one billion, two hundred fourteen million, two hundred ninety-nine thousand, five hundred twenty-one".