1220705155201 has 16 divisors (see below), whose sum is σ = 1398482546944. Its totient is φ = 1043776088064.

The previous prime is 1220705155141. The next prime is 1220705155207. The reversal of 1220705155201 is 1025515070221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220705155201 - 2¹³ = 1220705147009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220705155207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32009521 + ... + 32047633.

It is an arithmetic number, because the mean of its divisors is an integer number (87405159184).

Almost surely, 2^{1220705155201} is an apocalyptic number.

It is an amenable number.

1220705155201 is a deficient number, since it is larger than the sum of its proper divisors (177777391743).

1220705155201 is a wasteful number, since it uses less digits than its factorization.

1220705155201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49120.

The product of its (nonzero) digits is 7000, while the sum is 31.

The spelling of 1220705155201 in words is "one trillion, two hundred twenty billion, seven hundred five million, one hundred fifty-five thousand, two hundred one".