1202111121220 has 24 divisors (see below), whose sum is σ = 2657298268800. Its totient is φ = 455536845792.

The previous prime is 1202111121217. The next prime is 1202111121223. The reversal of 1202111121220 is 221211112021.

It is an interprime number because it is at equal distance from previous prime (1202111121217) and next prime (1202111121223).

It is a super-2 number, since 2×1202111121220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202111121194 and 1202111121203.

It is not an unprimeable number, because it can be changed into a prime (1202111121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1581724780 + ... + 1581725539.

It is an arithmetic number, because the mean of its divisors is an integer number (110720761200).

Almost surely, 2^{1202111121220} is an apocalyptic number.

1202111121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202111121220 is an abundant number, since it is smaller than the sum of its proper divisors (1455187147580).

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

1202111121220 is a wasteful number, since it uses less digits than its factorization.

1202111121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163450347 (or 3163450345 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1202111121220 its reverse (221211112021), we get a palindrome (1423322233241).

The spelling of 1202111121220 in words is "one trillion, two hundred two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twenty".