121022210111010 has 64 divisors (see below), whose sum is σ = 312796994848128. Its totient is φ = 29789974992384.

The previous prime is 121022210111003. The next prime is 121022210111039. The reversal of 121022210111010 is 10111012220121.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196155669 + ... + 196771671.

It is an arithmetic number, because the mean of its divisors is an integer number (4887453044502).

Almost surely, 2^{121022210111010} is an apocalyptic number.

121022210111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121022210111010 is an abundant number, since it is smaller than the sum of its proper divisors (191774784737118).

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

121022210111010 is a wasteful number, since it uses less digits than its factorization.

121022210111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119779.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121022210111010 its reverse (10111012220121), we get a palindrome (131133222331131).

The spelling of 121022210111010 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred ten million, one hundred eleven thousand, ten".