2012220210121 has 24 divisors (see below), whose sum is σ = 2350233086976. Its totient is φ = 1708128817920.

The previous prime is 2012220210107. The next prime is 2012220210139. The reversal of 2012220210121 is 1210120222102.

It is a happy number.

It is not a de Polignac number, because 2012220210121 - 2⁹ = 2012220209609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012220210095 and 2012220210104.

It is not an unprimeable number, because it can be changed into a prime (2012221210121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2088286 + ... + 2895751.

It is an arithmetic number, because the mean of its divisors is an integer number (97926378624).

Almost surely, 2^{2012220210121} is an apocalyptic number.

It is an amenable number.

2012220210121 is a deficient number, since it is larger than the sum of its proper divisors (338012876855).

2012220210121 is a wasteful number, since it uses less digits than its factorization.

2012220210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984209 (or 4984192 counting only the distinct ones).

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

Adding to 2012220210121 its reverse (1210120222102), we get a palindrome (3222340432223).

The spelling of 2012220210121 in words is "two trillion, twelve billion, two hundred twenty million, two hundred ten thousand, one hundred twenty-one".