2215534020020 has 48 divisors (see below), whose sum is σ = 4685165443728. Its totient is φ = 880035594240.

The previous prime is 2215534019927. The next prime is 2215534020023. The reversal of 2215534020020 is 200204355122.

It can be written as a sum of positive squares in 8 ways, for example, as 324430489744 + 1891103530276 = 569588^2 + 1375174^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215534020023) 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, 1050392 + ... + 2352528.

It is an arithmetic number, because the mean of its divisors is an integer number (97607613411).

Almost surely, 2^{2215534020020} is an apocalyptic number.

2215534020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215534020020 is an abundant number, since it is smaller than the sum of its proper divisors (2469631423708).

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

2215534020020 is a wasteful number, since it uses less digits than its factorization.

2215534020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302740 (or 1302738 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 2215534020020 its reverse (200204355122), we get a palindrome (2415738375142).

The spelling of 2215534020020 in words is "two trillion, two hundred fifteen billion, five hundred thirty-four million, twenty thousand, twenty".