21342011010 has 32 divisors (see below), whose sum is σ = 51226179840. Its totient is φ = 5690608128.

The previous prime is 21342010969. The next prime is 21342011011. The reversal of 21342011010 is 1011024312.

It is a super-2 number, since 2×21342011010² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (21342011011) 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, 306834 + ... + 369906.

It is an arithmetic number, because the mean of its divisors is an integer number (1600818120).

Almost surely, 2^21342011010 is an apocalyptic number.

21342011010 is an abundant number, since it is smaller than the sum of its proper divisors (29884168830).

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

21342011010 is a wasteful number, since it uses less digits than its factorization.

21342011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74362.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21342011010 its reverse (1011024312), we get a palindrome (22353035322).

It can be divided in two parts, 2134201 and 1010, that added together give a triangular number (2135211 = T₂₀₆₆).

The spelling of 21342011010 in words is "twenty-one billion, three hundred forty-two million, eleven thousand, ten".