21467755461212 has 12 divisors (see below), whose sum is σ = 37571286450096. Its totient is φ = 10733102189760.

The previous prime is 21467755461211. The next prime is 21467755461227. The reversal of 21467755461212 is 21216455776412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21467755461211) 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, 193822928 + ... + 193933655.

It is an arithmetic number, because the mean of its divisors is an integer number (3130940537508).

Almost surely, 2^{21467755461212} is an apocalyptic number.

It is an amenable number.

21467755461212 is a deficient number, since it is larger than the sum of its proper divisors (16103530988884).

21467755461212 is a wasteful number, since it uses less digits than its factorization.

21467755461212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387770428 (or 387770426 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 53.

The spelling of 21467755461212 in words is "twenty-one trillion, four hundred sixty-seven billion, seven hundred fifty-five million, four hundred sixty-one thousand, two hundred twelve".