21214042011012 has 48 divisors (see below), whose sum is σ = 50484275799552. Its totient is φ = 6930924549120.

The previous prime is 21214042010999. The next prime is 21214042011017. The reversal of 21214042011012 is 21011024041212.

It is a super-2 number, since 2×21214042011012² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21214042011012.

It is not an unprimeable number, because it can be changed into a prime (21214042011017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16198893 + ... + 17459444.

It is an arithmetic number, because the mean of its divisors is an integer number (1051755745824).

Almost surely, 2^{21214042011012} is an apocalyptic number.

It is an amenable number.

21214042011012 is an abundant number, since it is smaller than the sum of its proper divisors (29270233788540).

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

21214042011012 is a wasteful number, since it uses less digits than its factorization.

21214042011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33659388 (or 33659386 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21214042011012 its reverse (21011024041212), we get a palindrome (42225066052224).

The spelling of 21214042011012 in words is "twenty-one trillion, two hundred fourteen billion, forty-two million, eleven thousand, twelve".