21222020313346 has 8 divisors (see below), whose sum is σ = 31834536139584. Its totient is φ = 10610508266820.

The previous prime is 21222020313337. The next prime is 21222020313379. The reversal of 21222020313346 is 64331302022212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250892070 + ... + 250976641.

It is an arithmetic number, because the mean of its divisors is an integer number (3979317017448).

Almost surely, 2^{21222020313346} is an apocalyptic number.

21222020313346 is a deficient number, since it is larger than the sum of its proper divisors (10612515826238).

21222020313346 is a wasteful number, since it uses less digits than its factorization.

21222020313346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501889856.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 21222020313346 its reverse (64331302022212), we get a palindrome (85553322335558).

The spelling of 21222020313346 in words is "twenty-one trillion, two hundred twenty-two billion, twenty million, three hundred thirteen thousand, three hundred forty-six".