101201220121220 has 48 divisors (see below), whose sum is σ = 223710376108800. Its totient is φ = 38349521902080.

The previous prime is 101201220121217. The next prime is 101201220121223. The reversal of 101201220121220 is 22121022102101.

It is an interprime number because it is at equal distance from previous prime (101201220121217) and next prime (101201220121223).

It is not an unprimeable number, because it can be changed into a prime (101201220121223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35010476 + ... + 37790684.

It is an arithmetic number, because the mean of its divisors is an integer number (4660632835600).

Almost surely, 2^{101201220121220} is an apocalyptic number.

101201220121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101201220121220 is an abundant number, since it is smaller than the sum of its proper divisors (122509155987580).

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

101201220121220 is a wasteful number, since it uses less digits than its factorization.

101201220121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876028 (or 2876026 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101201220121220 its reverse (22121022102101), we get a palindrome (123322242223321).

The spelling of 101201220121220 in words is "one hundred one trillion, two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty".