1220555000401 has 8 divisors (see below), whose sum is σ = 1338953176800. Its totient is φ = 1103396595840.

The previous prime is 1220555000363. The next prime is 1220555000411. The reversal of 1220555000401 is 1040005550221.

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

It is not a de Polignac number, because 1220555000401 - 2¹⁵ = 1220554967633 is a prime.

It is a super-2 number, since 2×1220555000401² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220555000411) 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, 309940896 + ... + 309944833.

It is an arithmetic number, because the mean of its divisors is an integer number (167369147100).

Almost surely, 2^{1220555000401} is an apocalyptic number.

1220555000401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220555000401 is a deficient number, since it is larger than the sum of its proper divisors (118398176399).

1220555000401 is a wasteful number, since it uses less digits than its factorization.

1220555000401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619885919.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 1220555000401 in words is "one trillion, two hundred twenty billion, five hundred fifty-five million, four hundred one", and thus it is an aban number.