20120221010004 has 24 divisors (see below), whose sum is σ = 46947296198880. Its totient is φ = 6706724073504.

The previous prime is 20120221010003. The next prime is 20120221010027. The reversal of 20120221010004 is 40001012202102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120221010003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3788842 + ... + 7388894.

It is an arithmetic number, because the mean of its divisors is an integer number (1956137341620).

Almost surely, 2^{20120221010004} is an apocalyptic number.

It is an amenable number.

20120221010004 is an abundant number, since it is smaller than the sum of its proper divisors (26827075188876).

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

20120221010004 is a wasteful number, since it uses less digits than its factorization.

20120221010004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065799 (or 4065797 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20120221010004 its reverse (40001012202102), we get a palindrome (60121233212106).

The spelling of 20120221010004 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, ten thousand, four".