1222330142421 has 6 divisors (see below), whose sum is σ = 1765587983510. Its totient is φ = 814886761608.

The previous prime is 1222330142417. The next prime is 1222330142431. The reversal of 1222330142421 is 1242410332221.

1222330142421 is a `hidden beast` number, since 1 + 2 + 2 + 233 + 0 + 1 + 4 + 2 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 851631819921 + 370698322500 = 922839^2 + 608850^2 .

It is not a de Polignac number, because 1222330142421 - 2² = 1222330142417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222330142431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67907230126 + ... + 67907230143.

Almost surely, 2^{1222330142421} is an apocalyptic number.

It is an amenable number.

1222330142421 is a deficient number, since it is larger than the sum of its proper divisors (543257841089).

1222330142421 is a wasteful number, since it uses less digits than its factorization.

1222330142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135814460275 (or 135814460272 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1222330142421 its reverse (1242410332221), we get a palindrome (2464740474642).

The spelling of 1222330142421 in words is "one trillion, two hundred twenty-two billion, three hundred thirty million, one hundred forty-two thousand, four hundred twenty-one".