211222020121010 has 16 divisors (see below), whose sum is σ = 380246684950872. Its totient is φ = 84478352774400.

The previous prime is 211222020120973. The next prime is 211222020121039. The reversal of 211222020121010 is 10121020222112.

It can be written as a sum of positive squares in 4 ways, for example, as 104855408651449 + 106366611469561 = 10239893^2 + 10313419^2 .

It is a super-2 number, since 2×211222020121010² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211222020121010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1306824401 + ... + 1306986020.

Almost surely, 2^{211222020121010} is an apocalyptic number.

211222020121010 is a deficient number, since it is larger than the sum of its proper divisors (169024664829862).

211222020121010 is a wasteful number, since it uses less digits than its factorization.

211222020121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613818509.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211222020121010 its reverse (10121020222112), we get a palindrome (221343040343122).

The spelling of 211222020121010 in words is "two hundred eleven trillion, two hundred twenty-two billion, twenty million, one hundred twenty-one thousand, ten".