1220202110146 has 4 divisors (see below), whose sum is σ = 1830303165222. Its totient is φ = 610101055072.

The previous prime is 1220202110089. The next prime is 1220202110147. The reversal of 1220202110146 is 6410112020221.

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., 1160443863121 + 59758247025 = 1077239^2 + 244455^2 .

It is a super-2 number, since 2×1220202110146² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220202110147) 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 as a sum of consecutive naturals, namely, 305050527535 + ... + 305050527538.

Almost surely, 2^{1220202110146} is an apocalyptic number.

1220202110146 is a deficient number, since it is larger than the sum of its proper divisors (610101055076).

1220202110146 is an equidigital number, since it uses as much as digits as its factorization.

1220202110146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610101055075.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1220202110146 its reverse (6410112020221), we get a palindrome (7630314130367).

The spelling of 1220202110146 in words is "one trillion, two hundred twenty billion, two hundred two million, one hundred ten thousand, one hundred forty-six".