1401221233959 has 8 divisors (see below), whose sum is σ = 1868300866032. Its totient is φ = 934144545600.

The previous prime is 1401221233949. The next prime is 1401221233969. The reversal of 1401221233959 is 9593321221041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1401221233949) and next prime (1401221233969).

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

It is not a de Polignac number, because 1401221233959 - 2⁸ = 1401221233703 is a prime.

It is a super-2 number, since 2×1401221233959² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1401221233959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401221233949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884409 + ... + 1893309.

It is an arithmetic number, because the mean of its divisors is an integer number (233537608254).

Almost surely, 2^{1401221233959} is an apocalyptic number.

1401221233959 is a deficient number, since it is larger than the sum of its proper divisors (467079632073).

1401221233959 is a wasteful number, since it uses less digits than its factorization.

1401221233959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471857.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 1401221233959 in words is "one trillion, four hundred one billion, two hundred twenty-one million, two hundred thirty-three thousand, nine hundred fifty-nine".