1002121220211 has 16 divisors (see below), whose sum is σ = 1372812427008. Its totient is φ = 649769580000.

The previous prime is 1002121220197. The next prime is 1002121220231. The reversal of 1002121220211 is 1120221212001.

It is not a de Polignac number, because 1002121220211 - 2¹³ = 1002121212019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1002121220231) 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, 1486365 + ... + 2052686.

It is an arithmetic number, because the mean of its divisors is an integer number (85800776688).

Almost surely, 2^{1002121220211} is an apocalyptic number.

1002121220211 is a deficient number, since it is larger than the sum of its proper divisors (370691206797).

1002121220211 is a wasteful number, since it uses less digits than its factorization.

1002121220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541642.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1002121220211 its reverse (1120221212001), we get a palindrome (2122342432212).

The spelling of 1002121220211 in words is "one trillion, two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred eleven".