21220101111002 has 16 divisors (see below), whose sum is σ = 31958675582400. Its totient is φ = 10567213776000.

The previous prime is 21220101110983. The next prime is 21220101111031. The reversal of 21220101111002 is 20011110102212.

It is a super-2 number, since 2×21220101111002² (a number of 27 digits) contains 22 as substring.

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, 8335274 + ... + 10579082.

It is an arithmetic number, because the mean of its divisors is an integer number (1997417223900).

Almost surely, 2^{21220101111002} is an apocalyptic number.

21220101111002 is a deficient number, since it is larger than the sum of its proper divisors (10738574471398).

21220101111002 is a wasteful number, since it uses less digits than its factorization.

21220101111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262901.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21220101111002 its reverse (20011110102212), we get a palindrome (41231211213214).

The spelling of 21220101111002 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, one hundred eleven thousand, two".