121011212130 has 32 divisors (see below), whose sum is σ = 292713744384. Its totient is φ = 32015563776.

The previous prime is 121011212129. The next prime is 121011212131. The reversal of 121011212130 is 31212110121.

It is an interprime number because it is at equal distance from previous prime (121011212129) and next prime (121011212131).

It is a super-2 number, since 2×121011212130² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (121011212131) 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, 15876927 + ... + 15884546.

It is an arithmetic number, because the mean of its divisors is an integer number (9147304512).

Almost surely, 2^121011212130 is an apocalyptic number.

121011212130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121011212130 is an abundant number, since it is smaller than the sum of its proper divisors (171702532254).

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

121011212130 is a wasteful number, since it uses less digits than its factorization.

121011212130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31761610.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121011212130 its reverse (31212110121), we get a palindrome (152223322251).

The spelling of 121011212130 in words is "one hundred twenty-one billion, eleven million, two hundred twelve thousand, one hundred thirty".