1221340476466 has 24 divisors (see below), whose sum is σ = 2078655731712. Its totient is φ = 537246540600.

The previous prime is 1221340476457. The next prime is 1221340476467. The reversal of 1221340476466 is 6646740431221.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1221340476467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81393490 + ... + 81408493.

It is an arithmetic number, because the mean of its divisors is an integer number (86610655488).

Almost surely, 2^{1221340476466} is an apocalyptic number.

1221340476466 is a deficient number, since it is larger than the sum of its proper divisors (857315255246).

1221340476466 is a wasteful number, since it uses less digits than its factorization.

1221340476466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162802038 (or 162802027 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 1221340476466 in words is "one trillion, two hundred twenty-one billion, three hundred forty million, four hundred seventy-six thousand, four hundred sixty-six".