1021221111230 has 64 divisors (see below), whose sum is σ = 1869357849408. Its totient is φ = 401615585280.

The previous prime is 1021221111199. The next prime is 1021221111269. The reversal of 1021221111230 is 321111221201.

It is a happy number.

It is a super-2 number, since 2×1021221111230² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1021221111199 and 1021221111208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218534174 + ... + 218538846.

It is an arithmetic number, because the mean of its divisors is an integer number (29208716397).

Almost surely, 2^{1021221111230} is an apocalyptic number.

1021221111230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021221111230 is a deficient number, since it is larger than the sum of its proper divisors (848136738178).

1021221111230 is a wasteful number, since it uses less digits than its factorization.

1021221111230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5981.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1021221111230 its reverse (321111221201), we get a palindrome (1342332332431).

The spelling of 1021221111230 in words is "one trillion, twenty-one billion, two hundred twenty-one million, one hundred eleven thousand, two hundred thirty".