1020211121211 has 16 divisors (see below), whose sum is σ = 1432066800000. Its totient is φ = 644257672128.

The previous prime is 1020211121183. The next prime is 1020211121243. The reversal of 1020211121211 is 1121211120201.

It is a happy number.

1020211121211 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1020211121211 - 2²³ = 1020202732603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020211121291) 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, 765946 + ... + 1620831.

It is an arithmetic number, because the mean of its divisors is an integer number (89504175000).

Almost surely, 2^{1020211121211} is an apocalyptic number.

1020211121211 is a deficient number, since it is larger than the sum of its proper divisors (411855678789).

1020211121211 is a wasteful number, since it uses less digits than its factorization.

1020211121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394298.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1020211121211 its reverse (1121211120201), we get a palindrome (2141422241412).

The spelling of 1020211121211 in words is "one trillion, twenty billion, two hundred eleven million, one hundred twenty-one thousand, two hundred eleven".