213520121552004 has 48 divisors (see below), whose sum is σ = 525029311322880. Its totient is φ = 67351045013280.

The previous prime is 213520121551987. The next prime is 213520121552011. The reversal of 213520121552004 is 400255121025312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530088462 + ... + 530491109.

It is an arithmetic number, because the mean of its divisors is an integer number (10938110652560).

Almost surely, 2^{213520121552004} is an apocalyptic number.

It is an amenable number.

213520121552004 is an abundant number, since it is smaller than the sum of its proper divisors (311509189770876).

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

213520121552004 is a wasteful number, since it uses less digits than its factorization.

213520121552004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060580480 (or 1060580478 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 213520121552004 its reverse (400255121025312), we get a palindrome (613775242577316).

The spelling of 213520121552004 in words is "two hundred thirteen trillion, five hundred twenty billion, one hundred twenty-one million, five hundred fifty-two thousand, four".