1213014421 has 4 divisors (see below), whose sum is σ = 1216133100. Its totient is φ = 1209895744.

The previous prime is 1213014403. The next prime is 1213014437. The reversal of 1213014421 is 1244103121.

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 151167025 + 1061847396 = 12295^2 + 32586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213014421 - 2⁵ = 1213014389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213015421) 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, 1558756 + ... + 1559533.

It is an arithmetic number, because the mean of its divisors is an integer number (304033275).

Almost surely, 2^1213014421 is an apocalyptic number.

It is an amenable number.

1213014421 is a deficient number, since it is larger than the sum of its proper divisors (3118679).

1213014421 is an equidigital number, since it uses as much as digits as its factorization.

1213014421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118678.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1213014421 is about 34828.3565647304. The cubic root of 1213014421 is about 1066.4863992999.

Adding to 1213014421 its reverse (1244103121), we get a palindrome (2457117542).

The spelling of 1213014421 in words is "one billion, two hundred thirteen million, fourteen thousand, four hundred twenty-one".