1020101221020 has 48 divisors (see below), whose sum is σ = 3264323908608. Its totient is φ = 233165993280.

The previous prime is 1020101221019. The next prime is 1020101221049. The reversal of 1020101221020 is 201221010201.

1020101221020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1020101221020² (a number of 25 digits) contains 22 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 = 1020101220987 and 1020101221005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1214405796 + ... + 1214406635.

It is an arithmetic number, because the mean of its divisors is an integer number (68006748096).

Almost surely, 2^{1020101221020} is an apocalyptic number.

1020101221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020101221020 is an abundant number, since it is smaller than the sum of its proper divisors (2244222687588).

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

1020101221020 is a wasteful number, since it uses less digits than its factorization.

1020101221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428812450 (or 2428812448 counting only the distinct ones).

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

Adding to 1020101221020 its reverse (201221010201), we get a palindrome (1221322231221).

The spelling of 1020101221020 in words is "one trillion, twenty billion, one hundred one million, two hundred twenty-one thousand, twenty".