1020111121210 has 16 divisors (see below), whose sum is σ = 1836273825792. Its totient is φ = 408028046800.

The previous prime is 1020111121199. The next prime is 1020111121217. The reversal of 1020111121210 is 121211110201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1020111121217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787386 + ... + 2288005.

It is an arithmetic number, because the mean of its divisors is an integer number (114767114112).

Almost surely, 2^{1020111121210} is an apocalyptic number.

1020111121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020111121210 is a deficient number, since it is larger than the sum of its proper divisors (816162704582).

1020111121210 is a wasteful number, since it uses less digits than its factorization.

1020111121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100429.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1020111121210 its reverse (121211110201), we get a palindrome (1141322231411).

It can be divided in two parts, 102011 and 1121210, that added together give a palindrome (1223221).

The spelling of 1020111121210 in words is "one trillion, twenty billion, one hundred eleven million, one hundred twenty-one thousand, two hundred ten".