21226561465622 has 8 divisors (see below), whose sum is σ = 31841847147672. Its totient is φ = 10612612416400.

The previous prime is 21226561465601. The next prime is 21226561465721. The reversal of 21226561465622 is 22656416562212.

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

It is a congruent number.

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, 334118504 + ... + 334182027.

It is an arithmetic number, because the mean of its divisors is an integer number (3980230893459).

Almost surely, 2^{21226561465622} is an apocalyptic number.

21226561465622 is a deficient number, since it is larger than the sum of its proper divisors (10615285682050).

21226561465622 is a wasteful number, since it uses less digits than its factorization.

21226561465622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668316414.

The product of its digits is 4147200, while the sum is 50.

The spelling of 21226561465622 in words is "twenty-one trillion, two hundred twenty-six billion, five hundred sixty-one million, four hundred sixty-five thousand, six hundred twenty-two".