21122002002211 has 8 divisors (see below), whose sum is σ = 23063074481664. Its totient is φ = 19184411269320.

The previous prime is 21122002002137. The next prime is 21122002002259. The reversal of 21122002002211 is 11220020022112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21122002002211 - 2³¹ = 21119854518563 is a prime.

It is a super-2 number, since 2×21122002002211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122002002011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 870423951 + ... + 870448216.

It is an arithmetic number, because the mean of its divisors is an integer number (2882884310208).

Almost surely, 2^{21122002002211} is an apocalyptic number.

21122002002211 is a deficient number, since it is larger than the sum of its proper divisors (1941072479453).

21122002002211 is a wasteful number, since it uses less digits than its factorization.

21122002002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740873281.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21122002002211 its reverse (11220020022112), we get a palindrome (32342022024323).

It can be divided in two parts, 2 and 1122002002211, that multiplied together give a palindrome (2244004004422).

The spelling of 21122002002211 in words is "twenty-one trillion, one hundred twenty-two billion, two million, two thousand, two hundred eleven".