101111010101220 has 192 divisors, whose sum is σ = 335093466710016. Its totient is φ = 22300779863040.

The previous prime is 101111010101219. The next prime is 101111010101281. The reversal of 101111010101220 is 22101010111101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101111010101196 and 101111010101205.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34669857 + ... + 37472936.

It is an arithmetic number, because the mean of its divisors is an integer number (1745278472448).

Almost surely, 2^{101111010101220} is an apocalyptic number.

101111010101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101111010101220 is an abundant number, since it is smaller than the sum of its proper divisors (233982456608796).

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

101111010101220 is a wasteful number, since it uses less digits than its factorization.

101111010101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72142930 (or 72142928 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 101111010101220 its reverse (22101010111101), we get a palindrome (123212020212321).

The spelling of 101111010101220 in words is "one hundred one trillion, one hundred eleven billion, ten million, one hundred one thousand, two hundred twenty".