1020020211144 has 48 divisors (see below), whose sum is σ = 3013696080720. Its totient is φ = 309097033440.

The previous prime is 1020020211131. The next prime is 1020020211191. The reversal of 1020020211144 is 4411120200201.

It is a super-2 number, since 2×1020020211144² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643951362 + ... + 643952945.

It is an arithmetic number, because the mean of its divisors is an integer number (62785335015).

Almost surely, 2^{1020020211144} is an apocalyptic number.

It is an amenable number.

1020020211144 is an abundant number, since it is smaller than the sum of its proper divisors (1993675869576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020020211144 is a wasteful number, since it uses less digits than its factorization.

1020020211144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287904330 (or 1287904323 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1020020211144 its reverse (4411120200201), we get a palindrome (5431140411345).

The spelling of 1020020211144 in words is "one trillion, twenty billion, twenty million, two hundred eleven thousand, one hundred forty-four".