1202202012220 has 144 divisors (see below), whose sum is σ = 2812207706784. Its totient is φ = 431333056000.

The previous prime is 1202202012181. The next prime is 1202202012227. The reversal of 1202202012220 is 222102022021.

It is a junction number, because it is equal to n+sod(n) for n = 1202202012194 and 1202202012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202202012227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71606667 + ... + 71623453.

It is an arithmetic number, because the mean of its divisors is an integer number (19529220186).

Almost surely, 2^{1202202012220} is an apocalyptic number.

1202202012220 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 1202202012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406103853392).

1202202012220 is an abundant number, since it is smaller than the sum of its proper divisors (1610005694564).

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

1202202012220 is a wasteful number, since it uses less digits than its factorization.

1202202012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17212 (or 17199 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1202202012220 its reverse (222102022021), we get a palindrome (1424304034241).

The spelling of 1202202012220 in words is "one trillion, two hundred two billion, two hundred two million, twelve thousand, two hundred twenty".