1226220783 has 8 divisors (see below), whose sum is σ = 1636569600. Its totient is φ = 816676248.

The previous prime is 1226220733. The next prime is 1226220797. The reversal of 1226220783 is 3870226221.

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

It is not a de Polignac number, because 1226220783 - 2¹³ = 1226212591 is a prime.

It is a super-2 number, since 2×1226220783² = 3007234817322266178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226220703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197503 + ... + 203616.

It is an arithmetic number, because the mean of its divisors is an integer number (204571200).

Almost surely, 2^1226220783 is an apocalyptic number.

1226220783 is a deficient number, since it is larger than the sum of its proper divisors (410348817).

1226220783 is a wasteful number, since it uses less digits than its factorization.

1226220783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402141.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1226220783 is about 35017.4354143761. The cubic root of 1226220783 is about 1070.3427972611.

The spelling of 1226220783 in words is "one billion, two hundred twenty-six million, two hundred twenty thousand, seven hundred eighty-three".