1021223221101 has 32 divisors (see below), whose sum is σ = 1533713322240. Its totient is φ = 671511240000.

The previous prime is 1021223221091. The next prime is 1021223221103. The reversal of 1021223221101 is 1011223221201.

1021223221101 is a `hidden beast` number, since 10 + 212 + 232 + 211 + 0 + 1 = 666.

It is not a de Polignac number, because 1021223221101 - 2⁷ = 1021223220973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021223221103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5251 + ... + 1429151.

It is an arithmetic number, because the mean of its divisors is an integer number (47928541320).

Almost surely, 2^{1021223221101} is an apocalyptic number.

It is an amenable number.

1021223221101 is a deficient number, since it is larger than the sum of its proper divisors (512490101139).

1021223221101 is a wasteful number, since it uses less digits than its factorization.

1021223221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424274 (or 1424268 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1021223221101 its reverse (1011223221201), we get a palindrome (2032446442302).

The spelling of 1021223221101 in words is "one trillion, twenty-one billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred one".