21223666651046 has 32 divisors (see below), whose sum is σ = 33006828291840. Its totient is φ = 10223050624416.

The previous prime is 21223666651013. The next prime is 21223666651063. The reversal of 21223666651046 is 64015666632212.

It is a super-2 number, since 2×21223666651046² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21223666650985 and 21223666651003.

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, 46434101 + ... + 46888943.

It is an arithmetic number, because the mean of its divisors is an integer number (1031463384120).

Almost surely, 2^{21223666651046} is an apocalyptic number.

21223666651046 is a deficient number, since it is larger than the sum of its proper divisors (11783161640794).

21223666651046 is a wasteful number, since it uses less digits than its factorization.

21223666651046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456668.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 21223666651046 in words is "twenty-one trillion, two hundred twenty-three billion, six hundred sixty-six million, six hundred fifty-one thousand, forty-six".