21200221211011 has 32 divisors (see below), whose sum is σ = 23142509844480. Its totient is φ = 19346634604800.

The previous prime is 21200221210999. The next prime is 21200221211023. The reversal of 21200221211011 is 11011212200212.

It is an interprime number because it is at equal distance from previous prime (21200221210999) and next prime (21200221211023).

It is a cyclic number.

It is not a de Polignac number, because 21200221211011 - 2¹³ = 21200221202819 is a prime.

It is a super-2 number, since 2×21200221211011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21200221211041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436526616 + ... + 436575178.

It is an arithmetic number, because the mean of its divisors is an integer number (723203432640).

Almost surely, 2^{21200221211011} is an apocalyptic number.

21200221211011 is a deficient number, since it is larger than the sum of its proper divisors (1942288633469).

21200221211011 is a wasteful number, since it uses less digits than its factorization.

21200221211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52027.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21200221211011 its reverse (11011212200212), we get a palindrome (32211433411223).

The spelling of 21200221211011 in words is "twenty-one trillion, two hundred billion, two hundred twenty-one million, two hundred eleven thousand, eleven".