21014212101 has 16 divisors (see below), whose sum is σ = 28726969920. Its totient is φ = 13656746880.

The previous prime is 21014212073. The next prime is 21014212103. The reversal of 21014212101 is 10121241012.

It is not a de Polignac number, because 21014212101 - 2⁵ = 21014212069 is a prime.

It is a super-2 number, since 2×21014212101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014212103) 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, 94360 + ... + 225681.

It is an arithmetic number, because the mean of its divisors is an integer number (1795435620).

Almost surely, 2^21014212101 is an apocalyptic number.

It is an amenable number.

21014212101 is a deficient number, since it is larger than the sum of its proper divisors (7712757819).

21014212101 is a wasteful number, since it uses less digits than its factorization.

21014212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320596.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21014212101 its reverse (10121241012), we get a palindrome (31135453113).

The spelling of 21014212101 in words is "twenty-one billion, fourteen million, two hundred twelve thousand, one hundred one".