2012121550 has 24 divisors (see below), whose sum is σ = 3748338216. Its totient is φ = 803603040.

The previous prime is 2012121511. The next prime is 2012121571. The reversal of 2012121550 is 551212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1837 + ... + 63463.

It is an arithmetic number, because the mean of its divisors is an integer number (156180759).

Almost surely, 2^2012121550 is an apocalyptic number.

2012121550 is a deficient number, since it is larger than the sum of its proper divisors (1736216666).

2012121550 is a wasteful number, since it uses less digits than its factorization.

2012121550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62292 (or 62287 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 2012121550 is about 44856.6778752061. The cubic root of 2012121550 is about 1262.4612908434.

Adding to 2012121550 its reverse (551212102), we get a palindrome (2563333652).

The spelling of 2012121550 in words is "two billion, twelve million, one hundred twenty-one thousand, five hundred fifty".