203121334212552 has 48 divisors (see below), whose sum is σ = 628708891611840. Its totient is φ = 58034666917728.

The previous prime is 203121334212521. The next prime is 203121334212607. The reversal of 203121334212552 is 255212433121302.

203121334212552 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 21 + 33 + 42 + 12 + 552 = 666.

It is a super-2 number, since 2×203121334212552² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201509259628 + ... + 201509260635.

It is an arithmetic number, because the mean of its divisors is an integer number (13098101908580).

Almost surely, 2^{203121334212552} is an apocalyptic number.

It is an amenable number.

203121334212552 is an abundant number, since it is smaller than the sum of its proper divisors (425587557399288).

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

203121334212552 is a wasteful number, since it uses less digits than its factorization.

203121334212552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403018520282 (or 403018520275 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 203121334212552 its reverse (255212433121302), we get a palindrome (458333767333854).

The spelling of 203121334212552 in words is "two hundred three trillion, one hundred twenty-one billion, three hundred thirty-four million, two hundred twelve thousand, five hundred fifty-two".