1220552255042 has 4 divisors (see below), whose sum is σ = 1830828382566. Its totient is φ = 610276127520.

The previous prime is 1220552255029. The next prime is 1220552255071. The reversal of 1220552255042 is 2405522550221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 988554936121 + 231997318921 = 994261^2 + 481661^2 .

It is a super-2 number, since 2×1220552255042² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220552254993 and 1220552255011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305138063759 + ... + 305138063762.

Almost surely, 2^{1220552255042} is an apocalyptic number.

1220552255042 is a deficient number, since it is larger than the sum of its proper divisors (610276127524).

1220552255042 is an equidigital number, since it uses as much as digits as its factorization.

1220552255042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610276127523.

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 1220552255042 in words is "one trillion, two hundred twenty billion, five hundred fifty-two million, two hundred fifty-five thousand, forty-two".