1020210221122 has 4 divisors (see below), whose sum is σ = 1530315331686. Its totient is φ = 510105110560.

The previous prime is 1020210221119. The next prime is 1020210221161. The reversal of 1020210221122 is 2211220120201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 873665959401 + 146544261721 = 934701^2 + 382811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1020210221096 and 1020210221105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255052555279 + ... + 255052555282.

Almost surely, 2^{1020210221122} is an apocalyptic number.

1020210221122 is a deficient number, since it is larger than the sum of its proper divisors (510105110564).

1020210221122 is an equidigital number, since it uses as much as digits as its factorization.

1020210221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510105110563.

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

Adding to 1020210221122 its reverse (2211220120201), we get a palindrome (3231430341323).

The spelling of 1020210221122 in words is "one trillion, twenty billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty-two".