1011021012020 has 12 divisors (see below), whose sum is σ = 2123144125284. Its totient is φ = 404408404800.

The previous prime is 1011021011999. The next prime is 1011021012077. The reversal of 1011021012020 is 202101201101.

1011021012020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 785910618256 + 225110393764 = 886516^2 + 474458^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1011021011992 and 1011021012010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25275525281 + ... + 25275525320.

It is an arithmetic number, because the mean of its divisors is an integer number (176928677107).

Almost surely, 2^{1011021012020} is an apocalyptic number.

1011021012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011021012020 is an abundant number, since it is smaller than the sum of its proper divisors (1112123113264).

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

1011021012020 is a wasteful number, since it uses less digits than its factorization.

1011021012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50551050610 (or 50551050608 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1011021012020 its reverse (202101201101), we get a palindrome (1213122213121).

The spelling of 1011021012020 in words is "one trillion, eleven billion, twenty-one million, twelve thousand, twenty".