21203134414 has 32 divisors (see below), whose sum is σ = 41019955200. Its totient is φ = 7976099040.

The previous prime is 21203134411. The next prime is 21203134423. The reversal of 21203134414 is 41443130212.

It is a super-2 number, since 2×21203134414² (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 (21203134411) 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, 2369374 + ... + 2378305.

It is an arithmetic number, because the mean of its divisors is an integer number (1281873600).

Almost surely, 2^21203134414 is an apocalyptic number.

21203134414 is a deficient number, since it is larger than the sum of its proper divisors (19816820786).

21203134414 is a wasteful number, since it uses less digits than its factorization.

21203134414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747728.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21203134414 its reverse (41443130212), we get a palindrome (62646264626).

The spelling of 21203134414 in words is "twenty-one billion, two hundred three million, one hundred thirty-four thousand, four hundred fourteen".