21210012011048 has 16 divisors (see below), whose sum is σ = 45450025738080. Its totient is φ = 9090005147568.

The previous prime is 21210012011047. The next prime is 21210012011107. The reversal of 21210012011048 is 84011021001212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21210012011047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189375107186 + ... + 189375107297.

It is an arithmetic number, because the mean of its divisors is an integer number (2840626608630).

Almost surely, 2^{21210012011048} is an apocalyptic number.

21210012011048 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21210012011048 is an abundant number, since it is smaller than the sum of its proper divisors (24240013727032).

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

21210012011048 is a wasteful number, since it uses less digits than its factorization.

21210012011048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378750214496 (or 378750214492 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The spelling of 21210012011048 in words is "twenty-one trillion, two hundred ten billion, twelve million, eleven thousand, forty-eight".