1022221021012 has 48 divisors (see below), whose sum is σ = 1834136299072. Its totient is φ = 498230611200.

The previous prime is 1022221021007. The next prime is 1022221021013. The reversal of 1022221021012 is 2101201222201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022221021013) 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, 219782887 + ... + 219787537.

Almost surely, 2^{1022221021012} is an apocalyptic number.

It is an amenable number.

1022221021012 is a deficient number, since it is larger than the sum of its proper divisors (811915278060).

1022221021012 is a wasteful number, since it uses less digits than its factorization.

1022221021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6968 (or 6966 counting only the distinct ones).

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

Adding to 1022221021012 its reverse (2101201222201), we get a palindrome (3123422243213).

The spelling of 1022221021012 in words is "one trillion, twenty-two billion, two hundred twenty-one million, twenty-one thousand, twelve".