1421220013 has 4 divisors (see below), whose sum is σ = 1442432320. Its totient is φ = 1400007708.

The previous prime is 1421220011. The next prime is 1421220067. The reversal of 1421220013 is 3100221241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1421220013 - 2¹ = 1421220011 is a prime.

It is a super-3 number, since 3×1421220013³ (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 (1421220011) 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, 10606053 + ... + 10606186.

It is an arithmetic number, because the mean of its divisors is an integer number (360608080).

Almost surely, 2^1421220013 is an apocalyptic number.

It is an amenable number.

1421220013 is a deficient number, since it is larger than the sum of its proper divisors (21212307).

1421220013 is an equidigital number, since it uses as much as digits as its factorization.

1421220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21212306.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1421220013 is about 37699.0717790239. The cubic root of 1421220013 is about 1124.3126699980.

Adding to 1421220013 its reverse (3100221241), we get a palindrome (4521441254).

It can be divided in two parts, 14212 and 20013, that added together give a square (34225 = 185²).

The spelling of 1421220013 in words is "one billion, four hundred twenty-one million, two hundred twenty thousand, thirteen".