21214050156446 has 32 divisors (see below), whose sum is σ = 37951657712640. Its totient is φ = 8695630950336.

The previous prime is 21214050156443. The next prime is 21214050156449. The reversal of 21214050156446 is 64465105041212.

It is an interprime number because it is at equal distance from previous prime (21214050156443) and next prime (21214050156449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214050156443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384455 + ... + 6525021.

It is an arithmetic number, because the mean of its divisors is an integer number (1185989303520).

Almost surely, 2^{21214050156446} is an apocalyptic number.

21214050156446 is a deficient number, since it is larger than the sum of its proper divisors (16737607556194).

21214050156446 is a wasteful number, since it uses less digits than its factorization.

21214050156446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151328.

The product of its (nonzero) digits is 230400, while the sum is 41.

Adding to 21214050156446 its reverse (64465105041212), we get a palindrome (85679155197658).

The spelling of 21214050156446 in words is "twenty-one trillion, two hundred fourteen billion, fifty million, one hundred fifty-six thousand, four hundred forty-six".