1101012020 has 12 divisors (see below), whose sum is σ = 2312125284. Its totient is φ = 440404800.

The previous prime is 1101011957. The next prime is 1101012023. The reversal of 1101012020 is 202101011.

It can be written as a sum of positive squares in 2 ways, for example, as 371255824 + 729756196 = 19268^2 + 27014^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1101011989 and 1101012007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101012023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27525281 + ... + 27525320.

It is an arithmetic number, because the mean of its divisors is an integer number (192677107).

Almost surely, 2^1101012020 is an apocalyptic number.

1101012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101012020 is an abundant number, since it is smaller than the sum of its proper divisors (1211113264).

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

1101012020 is a wasteful number, since it uses less digits than its factorization.

1101012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55050610 (or 55050608 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1101012020 is about 33181.5011715866. The cubic root of 1101012020 is about 1032.5965905802.

Adding to 1101012020 its reverse (202101011), we get a palindrome (1303113031).

The spelling of 1101012020 in words is "one billion, one hundred one million, twelve thousand, twenty".