20021412215 has 16 divisors (see below), whose sum is σ = 27658366272. Its totient is φ = 13628753664.

The previous prime is 20021412179. The next prime is 20021412221. The reversal of 20021412215 is 51221412002.

It is a cyclic number.

It is not a de Polignac number, because 20021412215 - 2¹⁴ = 20021395831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2082944 + ... + 2092533.

It is an arithmetic number, because the mean of its divisors is an integer number (1728647892).

Almost surely, 2^20021412215 is an apocalyptic number.

20021412215 is a deficient number, since it is larger than the sum of its proper divisors (7636954057).

20021412215 is a wasteful number, since it uses less digits than its factorization.

20021412215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175626.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20021412215 its reverse (51221412002), we get a palindrome (71242824217).

The spelling of 20021412215 in words is "twenty billion, twenty-one million, four hundred twelve thousand, two hundred fifteen".