1011202021212 has 96 divisors (see below), whose sum is σ = 2568646370304. Its totient is φ = 308359526400.

The previous prime is 1011202021097. The next prime is 1011202021243. The reversal of 1011202021212 is 2121202021101.

It is a junction number, because it is equal to n+sod(n) for n = 1011202021191 and 1011202021200.

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, 2043583 + ... + 2489705.

It is an arithmetic number, because the mean of its divisors is an integer number (26756733024).

Almost surely, 2^{1011202021212} is an apocalyptic number.

1011202021212 is a gapful number since it is divisible by the number (12) 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 1011202021212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1284323185152).

1011202021212 is an abundant number, since it is smaller than the sum of its proper divisors (1557444349092).

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

1011202021212 is a wasteful number, since it uses less digits than its factorization.

1011202021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446459 (or 446457 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1011202021212 its reverse (2121202021101), we get a palindrome (3132404042313).

The spelling of 1011202021212 in words is "one trillion, eleven billion, two hundred two million, twenty-one thousand, two hundred twelve".