211221011202122 has 16 divisors (see below), whose sum is σ = 317586089995872. Its totient is φ = 105358984370640.

The previous prime is 211221011202079. The next prime is 211221011202143. The reversal of 211221011202122 is 221202110122112.

It is a super-2 number, since 2×211221011202122² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221011202094 and 211221011202103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149681453 + ... + 151085999.

It is an arithmetic number, because the mean of its divisors is an integer number (19849130624742).

Almost surely, 2^{211221011202122} is an apocalyptic number.

211221011202122 is a deficient number, since it is larger than the sum of its proper divisors (106365078793750).

211221011202122 is a wasteful number, since it uses less digits than its factorization.

211221011202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583573.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211221011202122 its reverse (221202110122112), we get a palindrome (432423121324234).

The spelling of 211221011202122 in words is "two hundred eleven trillion, two hundred twenty-one billion, eleven million, two hundred two thousand, one hundred twenty-two".