1200022020221 has 2 divisors, whose sum is σ = 1200022020222. Its totient is φ = 1200022020220.

The previous prime is 1200022020209. The next prime is 1200022020233. The reversal of 1200022020221 is 1220202200021.

It is a balanced prime because it is at equal distance from previous prime (1200022020209) and next prime (1200022020233).

It can be written as a sum of positive squares in only one way, i.e., 960421560121 + 239600460100 = 980011^2 + 489490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200022020221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200022020196 and 1200022020205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200022028221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600011010110 + 600011010111.

It is an arithmetic number, because the mean of its divisors is an integer number (600011010111).

Almost surely, 2^{1200022020221} is an apocalyptic number.

It is an amenable number.

1200022020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200022020221 is an equidigital number, since it uses as much as digits as its factorization.

1200022020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1200022020221 its reverse (1220202200021), we get a palindrome (2420224220242).

The spelling of 1200022020221 in words is "one trillion, two hundred billion, twenty-two million, twenty thousand, two hundred twenty-one".