1202210102021 has 2 divisors, whose sum is σ = 1202210102022. Its totient is φ = 1202210102020.

The previous prime is 1202210101999. The next prime is 1202210102089. The reversal of 1202210102021 is 1202010122021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170183062500 + 32027039521 = 1081750^2 + 178961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202210102021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202210101987 and 1202210102005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202210101021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601105051010 + 601105051011.

It is an arithmetic number, because the mean of its divisors is an integer number (601105051011).

Almost surely, 2^{1202210102021} is an apocalyptic number.

It is an amenable number.

1202210102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202210102021 is an equidigital number, since it uses as much as digits as its factorization.

1202210102021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1202210102021 its reverse (1202010122021), we get a palindrome (2404220224042).

The spelling of 1202210102021 in words is "one trillion, two hundred two billion, two hundred ten million, one hundred two thousand, twenty-one".