2102210121009 has 16 divisors (see below), whose sum is σ = 2879070474240. Its totient is φ = 1363421283840.

The previous prime is 2102210121007. The next prime is 2102210121013. The reversal of 2102210121009 is 9001210122012.

It is not a de Polignac number, because 2102210121009 - 2¹ = 2102210121007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102210121007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337329 + ... + 2078030.

It is an arithmetic number, because the mean of its divisors is an integer number (179941904640).

Almost surely, 2^{2102210121009} is an apocalyptic number.

It is an amenable number.

2102210121009 is a deficient number, since it is larger than the sum of its proper divisors (776860353231).

2102210121009 is a wasteful number, since it uses less digits than its factorization.

2102210121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423240.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 2102210121009 in words is "two trillion, one hundred two billion, two hundred ten million, one hundred twenty-one thousand, nine".