21211110010122 has 32 divisors (see below), whose sum is σ = 42493976507520. Its totient is φ = 7058413486080.

The previous prime is 21211110010117. The next prime is 21211110010141. The reversal of 21211110010122 is 22101001111212.

It is a happy number.

It is a super-2 number, since 2×21211110010122² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29267754 + ... + 29983722.

It is an arithmetic number, because the mean of its divisors is an integer number (1327936765860).

Almost surely, 2^{21211110010122} is an apocalyptic number.

21211110010122 is an abundant number, since it is smaller than the sum of its proper divisors (21282866497398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211110010122 is a wasteful number, since it uses less digits than its factorization.

21211110010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724318.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21211110010122 its reverse (22101001111212), we get a palindrome (43312111121334).

The spelling of 21211110010122 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, ten thousand, one hundred twenty-two".