2121220201012 has 24 divisors (see below), whose sum is σ = 4076780752800. Its totient is φ = 957719916960.

The previous prime is 2121220200973. The next prime is 2121220201019. The reversal of 2121220201012 is 2101020221212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121220201019) 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, 161770458 + ... + 161783569.

It is an arithmetic number, because the mean of its divisors is an integer number (169865864700).

Almost surely, 2^{2121220201012} is an apocalyptic number.

2121220201012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121220201012 is a deficient number, since it is larger than the sum of its proper divisors (1955560551788).

2121220201012 is a wasteful number, since it uses less digits than its factorization.

2121220201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323554191 (or 323554189 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121220201012 its reverse (2101020221212), we get a palindrome (4222240422224).

It can be divided in two parts, 2121220 and 201012, that added together give a palindrome (2322232).

The spelling of 2121220201012 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred one thousand, twelve".