21212279041 has 8 divisors (see below), whose sum is σ = 22597737120. Its totient is φ = 19853723232.

The previous prime is 21212279029. The next prime is 21212279047. The reversal of 21212279041 is 14097221212.

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

It is a cyclic number.

It is not a de Polignac number, because 21212279041 - 2¹¹ = 21212276993 is a prime.

It is a super-2 number, since 2×21212279041² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21212278994 and 21212279012.

It is not an unprimeable number, because it can be changed into a prime (21212279047) 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, 6723940 + ... + 6727093.

It is an arithmetic number, because the mean of its divisors is an integer number (2824717140).

Almost surely, 2^21212279041 is an apocalyptic number.

It is an amenable number.

21212279041 is a deficient number, since it is larger than the sum of its proper divisors (1385458079).

21212279041 is a wasteful number, since it uses less digits than its factorization.

21212279041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13451135.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 21212279041 in words is "twenty-one billion, two hundred twelve million, two hundred seventy-nine thousand, forty-one".