1021220011222 has 8 divisors (see below), whose sum is σ = 1621937664936. Its totient is φ = 480574122912.

The previous prime is 1021220011193. The next prime is 1021220011223. The reversal of 1021220011222 is 2221100221201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1021220011222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021220011196 and 1021220011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021220011223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15017941308 + ... + 15017941375.

It is an arithmetic number, because the mean of its divisors is an integer number (202742208117).

Almost surely, 2^{1021220011222} is an apocalyptic number.

1021220011222 is a deficient number, since it is larger than the sum of its proper divisors (600717653714).

1021220011222 is a wasteful number, since it uses less digits than its factorization.

1021220011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30035882702.

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

Adding to 1021220011222 its reverse (2221100221201), we get a palindrome (3242320232423).

The spelling of 1021220011222 in words is "one trillion, twenty-one billion, two hundred twenty million, eleven thousand, two hundred twenty-two".