1061501212220 has 12 divisors (see below), whose sum is σ = 2229152545704. Its totient is φ = 424600484880.

The previous prime is 1061501212199. The next prime is 1061501212223. The reversal of 1061501212220 is 222121051601.

It is a super-2 number, since 2×1061501212220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061501212223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26537530286 + ... + 26537530325.

It is an arithmetic number, because the mean of its divisors is an integer number (185762712142).

Almost surely, 2^{1061501212220} is an apocalyptic number.

1061501212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061501212220 is an abundant number, since it is smaller than the sum of its proper divisors (1167651333484).

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

1061501212220 is a wasteful number, since it uses less digits than its factorization.

1061501212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53075060620 (or 53075060618 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 1061501212220 its reverse (222121051601), we get a palindrome (1283622263821).

It can be divided in two parts, 1061501 and 212220, that added together give a palindrome (1273721).

The spelling of 1061501212220 in words is "one trillion, sixty-one billion, five hundred one million, two hundred twelve thousand, two hundred twenty".