222121201010 has 8 divisors (see below), whose sum is σ = 399818161836. Its totient is φ = 88848480400.

The previous prime is 222121200941. The next prime is 222121201019. The reversal of 222121201010 is 10102121222.

It can be written as a sum of positive squares in 2 ways, for example, as 206096932441 + 16024268569 = 453979^2 + 126587^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (222121201019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11106060041 + ... + 11106060060.

Almost surely, 2^222121201010 is an apocalyptic number.

222121201010 is a deficient number, since it is larger than the sum of its proper divisors (177696960826).

222121201010 is a wasteful number, since it uses less digits than its factorization.

222121201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22212120108.

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

Adding to 222121201010 its reverse (10102121222), we get a palindrome (232223322232).

The spelling of 222121201010 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred one thousand, ten".