21142120362 has 64 divisors (see below), whose sum is σ = 46483092864. Its totient is φ = 6357616640.

The previous prime is 21142120361. The next prime is 21142120387. The reversal of 21142120362 is 26302124112.

It is a super-2 number, since 2×21142120362² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21142120361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4872658 + ... + 4876994.

It is an arithmetic number, because the mean of its divisors is an integer number (726298326).

Almost surely, 2^21142120362 is an apocalyptic number.

21142120362 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21142120362 is an abundant number, since it is smaller than the sum of its proper divisors (25340972502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21142120362 is a wasteful number, since it uses less digits than its factorization.

21142120362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21142120362 its reverse (26302124112), we get a palindrome (47444244474).

The spelling of 21142120362 in words is "twenty-one billion, one hundred forty-two million, one hundred twenty thousand, three hundred sixty-two".