1201012101020 has 72 divisors (see below), whose sum is σ = 2613923789568. Its totient is φ = 463514284800.

The previous prime is 1201012100983. The next prime is 1201012101031. The reversal of 1201012101020 is 201012101021.

It is a junction number, because it is equal to n+sod(n) for n = 1201012100992 and 1201012101010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24717950 + ... + 24766490.

Almost surely, 2^{1201012101020} is an apocalyptic number.

1201012101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201012101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306961894784).

1201012101020 is an abundant number, since it is smaller than the sum of its proper divisors (1412911688548).

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

1201012101020 is a wasteful number, since it uses less digits than its factorization.

1201012101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50079 (or 50048 counting only the distinct ones).

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

Adding to 1201012101020 its reverse (201012101021), we get a palindrome (1402024202041).

Subtracting from 1201012101020 its reverse (201012101021), we obtain a palindrome (999999999999).

The spelling of 1201012101020 in words is "one trillion, two hundred one billion, twelve million, one hundred one thousand, twenty".