1220022121012 has 12 divisors (see below), whose sum is σ = 2227866482016. Its totient is φ = 583488840440.

The previous prime is 1220022121009. The next prime is 1220022121069. The reversal of 1220022121012 is 2101212200221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 6630554914 + ... + 6630555097.

It is an arithmetic number, because the mean of its divisors is an integer number (185655540168).

Almost surely, 2^{1220022121012} is an apocalyptic number.

It is an amenable number.

1220022121012 is a deficient number, since it is larger than the sum of its proper divisors (1007844361004).

1220022121012 is a wasteful number, since it uses less digits than its factorization.

1220022121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13261110038 (or 13261110036 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220022121012 its reverse (2101212200221), we get a palindrome (3321234321233).

The spelling of 1220022121012 in words is "one trillion, two hundred twenty billion, twenty-two million, one hundred twenty-one thousand, twelve".