21011462 has 4 divisors (see below), whose sum is σ = 31517196. Its totient is φ = 10505730.

The previous prime is 21011453. The next prime is 21011503. The reversal of 21011462 is 26411012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21011462.

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, 5252864 + ... + 5252867.

It is an arithmetic number, because the mean of its divisors is an integer number (7879299).

Almost surely, 2^21011462 is an apocalyptic number.

21011462 is a deficient number, since it is larger than the sum of its proper divisors (10505734).

21011462 is a wasteful number, since it uses less digits than its factorization.

21011462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10505733.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 21011462 is about 4583.8261310831. The cubic root of 21011462 is about 275.9426034116.

Adding to 21011462 its reverse (26411012), we get a palindrome (47422474).

The spelling of 21011462 in words is "twenty-one million, eleven thousand, four hundred sixty-two".