1020020111211 has 16 divisors (see below), whose sum is σ = 1368659253024. Its totient is φ = 675701620224.

The previous prime is 1020020111191. The next prime is 1020020111219. The reversal of 1020020111211 is 1121110200201.

It is not a de Polignac number, because 1020020111211 - 2²⁵ = 1019986556779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020020111219) 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, 369265 + ... + 1475261.

It is an arithmetic number, because the mean of its divisors is an integer number (85541203314).

Almost surely, 2^{1020020111211} is an apocalyptic number.

1020020111211 is a deficient number, since it is larger than the sum of its proper divisors (348639141813).

1020020111211 is a wasteful number, since it uses less digits than its factorization.

1020020111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107950.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1020020111211 its reverse (1121110200201), we get a palindrome (2141130311412).

It can be divided in two parts, 10200201 and 11211, that multiplied together give a palindrome (114354453411).

The spelling of 1020020111211 in words is "one trillion, twenty billion, twenty million, one hundred eleven thousand, two hundred eleven".