1220356223737 has 8 divisors (see below), whose sum is σ = 1400249374272. Its totient is φ = 1041852210000.

The previous prime is 1220356223719. The next prime is 1220356223761. The reversal of 1220356223737 is 7373226530221.

It is a happy number.

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

It is not a de Polignac number, because 1220356223737 - 2²⁷ = 1220222006009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220356223693 and 1220356223702.

It is not an unprimeable number, because it can be changed into a prime (1220356223797) 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, 347282314 + ... + 347285827.

It is an arithmetic number, because the mean of its divisors is an integer number (175031171784).

Almost surely, 2^{1220356223737} is an apocalyptic number.

It is an amenable number.

1220356223737 is a deficient number, since it is larger than the sum of its proper divisors (179893150535).

1220356223737 is an equidigital number, since it uses as much as digits as its factorization.

1220356223737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694568399.

The product of its (nonzero) digits is 635040, while the sum is 43.

The spelling of 1220356223737 in words is "one trillion, two hundred twenty billion, three hundred fifty-six million, two hundred twenty-three thousand, seven hundred thirty-seven".