20213301421 has 8 divisors (see below), whose sum is σ = 20747116800. Its totient is φ = 19683808848.

The previous prime is 20213301419. The next prime is 20213301469. The reversal of 20213301421 is 12410331202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20213301421 - 2¹ = 20213301419 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 (20213301481) 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, 1071226 + ... + 1089931.

It is an arithmetic number, because the mean of its divisors is an integer number (2593389600).

Almost surely, 2^20213301421 is an apocalyptic number.

It is an amenable number.

20213301421 is a deficient number, since it is larger than the sum of its proper divisors (533815379).

20213301421 is a wasteful number, since it uses less digits than its factorization.

20213301421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161403.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20213301421 its reverse (12410331202), we get a palindrome (32623632623).

The spelling of 20213301421 in words is "twenty billion, two hundred thirteen million, three hundred one thousand, four hundred twenty-one".