1220020003311 has 16 divisors (see below), whose sum is σ = 1670732181984. Its totient is φ = 791329198464.

The previous prime is 1220020003297. The next prime is 1220020003361. The reversal of 1220020003311 is 1133000200221.

It is not a de Polignac number, because 1220020003311 - 2⁷ = 1220020003183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220020003361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2396041 + ... + 2860253.

It is an arithmetic number, because the mean of its divisors is an integer number (104420761374).

Almost surely, 2^{1220020003311} is an apocalyptic number.

1220020003311 is a deficient number, since it is larger than the sum of its proper divisors (450712178673).

1220020003311 is a wasteful number, since it uses less digits than its factorization.

1220020003311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487930.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1220020003311 its reverse (1133000200221), we get a palindrome (2353020203532).

The spelling of 1220020003311 in words is "one trillion, two hundred twenty billion, twenty million, three thousand, three hundred eleven".