1220125601 has 8 divisors (see below), whose sum is σ = 1261570464. Its totient is φ = 1179237280.

The previous prime is 1220125553. The next prime is 1220125637. The reversal of 1220125601 is 1065210221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220125601 - 2¹⁴ = 1220109217 is a prime.

It is a super-2 number, since 2×1220125601² = 2977412964431222402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220125661) 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, 134675 + ... + 143448.

It is an arithmetic number, because the mean of its divisors is an integer number (157696308).

Almost surely, 2^1220125601 is an apocalyptic number.

It is an amenable number.

1220125601 is a deficient number, since it is larger than the sum of its proper divisors (41444863).

1220125601 is a wasteful number, since it uses less digits than its factorization.

1220125601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278271.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1220125601 is about 34930.2963199570. The cubic root of 1220125601 is about 1068.5663978530.

Adding to 1220125601 its reverse (1065210221), we get a palindrome (2285335822).

The spelling of 1220125601 in words is "one billion, two hundred twenty million, one hundred twenty-five thousand, six hundred one".