1021012201020 has 96 divisors (see below), whose sum is σ = 3267377584128. Its totient is φ = 233364321792.

The previous prime is 1021012200973. The next prime is 1021012201031. The reversal of 1021012201020 is 201022101201.

It is a super-3 number, since 3×1021012201020³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1021012200987 and 1021012201005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15308064 + ... + 15374616.

It is an arithmetic number, because the mean of its divisors is an integer number (34035183168).

Almost surely, 2^{1021012201020} is an apocalyptic number.

1021012201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021012201020 is an abundant number, since it is smaller than the sum of its proper divisors (2246365383108).

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

1021012201020 is a wasteful number, since it uses less digits than its factorization.

1021012201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103099 (or 103097 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1021012201020 its reverse (201022101201), we get a palindrome (1222034302221).

The spelling of 1021012201020 in words is "one trillion, twenty-one billion, twelve million, two hundred one thousand, twenty".