21222220002011 has 16 divisors (see below), whose sum is σ = 24296983941120. Its totient is φ = 18158218178400.

The previous prime is 21222220001993. The next prime is 21222220002029. The reversal of 21222220002011 is 11020002222212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21222220001993) and next prime (21222220002029).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222220002011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222220062011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33847061 + ... + 34468361.

It is an arithmetic number, because the mean of its divisors is an integer number (1518561496320).

Almost surely, 2^{21222220002011} is an apocalyptic number.

21222220002011 is a deficient number, since it is larger than the sum of its proper divisors (3074763939109).

21222220002011 is an equidigital number, since it uses as much as digits as its factorization.

21222220002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629954.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21222220002011 its reverse (11020002222212), we get a palindrome (32242222224223).

The spelling of 21222220002011 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty million, two thousand, eleven".