1020101021212 has 72 divisors (see below), whose sum is σ = 2236704336720. Its totient is φ = 403497077760.

The previous prime is 1020101021197. The next prime is 1020101021231. The reversal of 1020101021212 is 2121201010201.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1020101021192 and 1020101021201.

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, 19953339 + ... + 20004397.

It is an arithmetic number, because the mean of its divisors is an integer number (31065338010).

Almost surely, 2^{1020101021212} is an apocalyptic number.

It is an amenable number.

1020101021212 is an abundant number, since it is smaller than the sum of its proper divisors (1216603315508).

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

1020101021212 is a wasteful number, since it uses less digits than its factorization.

1020101021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58931 (or 58922 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020101021212 its reverse (2121201010201), we get a palindrome (3141302031413).

The spelling of 1020101021212 in words is "one trillion, twenty billion, one hundred one million, twenty-one thousand, two hundred twelve".