21212927702 has 4 divisors (see below), whose sum is σ = 31819391556. Its totient is φ = 10606463850.

The previous prime is 21212927683. The next prime is 21212927713. The reversal of 21212927702 is 20772921212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5303231924 + ... + 5303231927.

It is an arithmetic number, because the mean of its divisors is an integer number (7954847889).

Almost surely, 2^21212927702 is an apocalyptic number.

21212927702 is a deficient number, since it is larger than the sum of its proper divisors (10606463854).

21212927702 is a wasteful number, since it uses less digits than its factorization.

21212927702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10606463853.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 21212927702 in words is "twenty-one billion, two hundred twelve million, nine hundred twenty-seven thousand, seven hundred two".